Killzone: Mercenary - Mission 4 (Diplomatic Incident): Demolition Contracts (walkthrough)

Contract loadout requirements: VC-G11 Gas, VC39

The mission requirements:

• Kill 10 enemies with gas grenades 
• Kill 30 enemies with VC39 Accelerator Rifle
• Achieve 5 Mercy kills
• Injure 10 enemies

My recommendation to bring along on this contract loadout:

• Van-Guard Systems: Arc Missile

Please note that a Helghast flamethrower trooper cannot be injured in any way beside killing them normally while an officer cannot be "Mercy killed".   
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Kill 10 enemies with gas grenades  

There are plenty of enemies on this mission to do this objective; please note that VC-G11 Gas has zero to no affect on helghast flamethrower troops so don't bother try to gas them.     

  

Kill 30 enemies with VC39 Accelerator Rifle

There are plenty enemies on this mission to do this objective.
   

Achieve 5 Mercy kills

Methods and their chances of success (only will happen if the enemy are injured):

• VC-G11: Low Chance even if the enemies is on the outer edge of the gas
  
• Arc Missile: High Chance if it one vs one situation.
• Melee: High Chance (100%), will not get mercy kill from enemy's officer    

      

Injure 10 enemies

 

Methods and their chances of success:

• VC-G11: Average Chance if the enemies is on the outer edge of the gas
  
• Arc Missile: High Chance if it one vs one situation.
• M2 Tranquilizer Pistol: High Chance (100%) if you hit the enemy (will not work on Helghast flamethrower) 
• Average or Low Damaging Gun: A chance if you attack their leg in one vs one situation where you might have more control of how many shot is taken.  

Killzone: Mercenary - Mission 7 (Hostile Takeover): Demolition Contracts (walkthrough)

Contract loadout requirements: STA-12, Sky Fury

The mission requirements:

• Kill 25 enemies with STA-12 Inferno shotgun 
• Kill 15 enemies with Sky Fury
• End jamming in 4 minutes after it starts
• Destroy 25 enemy proximity mines

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Kill 25 enemies with STA-12 Inferno shotgun  

There are plenty of enemies on this mission to do this objective; I recommend doing this indoor or any location that the "Sky Fury" kills objective can't get to.     

  

Kill 15 enemies with Sky Fury

There are plenty enemies on this mission to do this objective; I recommend doing this outdoor since it can only be done outdoor.
   

End jamming in 4 minutes after it starts

The jamming starts along with the objective timer the second you enter the courtyard the second time.

The jammer is on right corner on the opposite side where you just exit into the courtyard. It only take a few second to walk or dash across the courtyard. How you go about this is up to you (the player).
      

Destroy 25 enemy proximity mines

 

There are more then 25 enemy proximity mines on this mission to do this objective but there will be no more proximity mines when you re-entering the courtyard and thereafter on the mission.

Killzone: Mercenary - Mission 8 (Blood Money): Demolition Contracts (walkthrough)

Contract loadout requirements: STA-G2 Pyro

The mission requirements:

• Burn an enemy in the incinerator in Lab 01
• Kill a rocket trooper with a Brutal Melee
• Destroy 3 Intruders
• Kill 8 enemies with STA-G2 Pyro grenades

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Burn an enemy in the incinerator in Lab 01 

There are two ways to turn on the incinerator in "Lab 01"; one is to physically push the button to turn it on and the other way is shoot the button to turn it on. 

I recommended when going to the "Lab 01", go climb the ladder on the left side to enter the lab 01 and when your top jump around to make your presences known. When your presences is known they will be alerted and ready to fight while using cover, you then proceed to climb down to lab 01. Make sure that you lurk some into the incinerator as a cover before you climb down to lab 01. If this didn't work the 1st time, fight from the top and lurk some until you get the objective done.   

  

Kill a rocket trooper with a Brutal Melee

The objective is asking you (the player) to melee a rocket trooper from the front.

Rocket Trooper Location:

• (1) The start of the mission
• (1) The area after "Lab 02" but before the vault door area.

   

Destroy 3 Intruders

Location of destroyable "Intruders":

• (2) The start of the mission on the deck.
• (1) Lab 02; this intruder will not stay long, so it hard to destroy it given the time limit to reload and shoot it twice (not recommend for beginner and/or unskilled player)
• (1) In front of the vault door area; it will stay and fight if the alarm was rise but if no alarm was ever rise it will leave. If the intruder stay and fight, do not kill off the soldiers on top of it unless you kill all of them along with the intruder all at once. 

You can uses the Van-Guard: Sky Fury on the Intruders at the 1st and 3rd location but not the 2nd. You can also uses an "explosive" type of weapons of your choice to destroy the Intruders. 
      

Kill 8 enemies with STA-G2 Pyro grenades

 

A simple objective where it should be easy to complete. I recommend when doing this objective is to do it in enclose spaces or crowd places.

Killzone: Mercenary - Mission 5 (The Package): Covert Contracts (walkthrough)

Contract loadout requirements: Vultur

The mission requirements:

• Stealth through the Market
• Backstab 5 soldiers near the elevator entrance
• Kill 20 enemies with the Vultur active
• Stealth into the Outpost

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Stealth through the Market 

This apply only when you at the "Market" until you exit the "Market".  

Remember stealth kill here. Eliminated the left side and the right side soldiers first before taking out the officer at the center. Do not kill the officer when he is still interrogating a civilian, only kill the officer after the civilian leave. Move forward a little after you kill the officer to see a new enemy will spawn in front of an enemy that already there on your radar. Move in for the kill after the spawned enemy starts walking away. Now you done and you can finally exit the "Market".
  

Backstab 5 soldiers near the elevator entrance

This apply to the 5 soldier near the the elevator entrance after the "Outpost"

It is recommend you do "stealth" on this objective and uses "Ghost" for the Van-Guard. Nothing will count for this objective even if you did backstab in this area if the alarm was rise.

There are only 5 soldiers in this area just like the objective asked. 2 soldier will not move, 2 soldier will be moving, and 1 soldier will only move when you (the player) just turn the corner. My advise is to kill all moving soldier first before the non-moving one.
   

Kill 20 enemies with the Vultur active

This is simple to do and can be finish at any time during the mission.    
      

Stealth into the Outpost

 

This apply only at the start of the mission until you reach the inside the "Outpost" structure.

Remember stealth kill here. If you move forward and shoot stealth kill everyone in the following order. soldier that trying kill a civilian, an officer, a soldier on the right, a soldier way in the back just standing, and finally the soldier on the left side.

You then move on to the next area which is the "outpost", you can switch weapon before you come here or not but before you zipline kill the sniper. You just need to enter the "Outpost" structure to complete the objective.   

Killzone: Mercenary - Mission 4 (Diplomatic Incident): Covert Contracts (walkthrough)

Contract loadout requirements: Ghost, STA-7

The mission requirements:

• Achieve 15 Ghost Generator kills
• Kill 30 enemies with STA-7
• Stealth to the ambassador's office
• Get into the lobby avoiding the main entrance

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Achieve 15 Ghost Generator kills 

There are plenty of enemies to kill on this mission.  

Kill 30 enemies with STA-7

There are plenty of enemies to kill on this mission.
 

Stealth to the ambassador's office

This apply from the start of the mission until you reach Ambassador's office.

Below is simple version walkthrough on how to do it.      
      

Get into the lobby avoiding the main entrance

 

This apply only at the start of the mission. Uses the ladder on the left side of the building.

Below is simple version walkthrough on how to do it.
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Time for some stealth and stealth kills, remember stealth is all about not being see nor heard.

Embassy Main Entrance and Lobby Area:
This is the start of the mission, you can eliminated all the enemies outside the building for the kills or just bypass them by climbing the ladder on the left side of the building. Either way, you still need to climb the ladder on the left side for the "Get into the lobby avoiding the main entrance" objective. You then eliminated the officer on top before you hack a door on the left near the top of stairway to gain entrances to another room. Eliminated the two enemies in this room area and then proceeds to the next area.

Top of the courtyard and the room next to it Area:
You going stealth kills everyone here to be safe. Start with the one on the outside, then move on to the next room. After that move on to the next room and finally that same room but upstair.

Then you go through the door and kill the last enemy with a rocket. Now you free to proceed to the ambassador's office. If you see red alerted enemies on the right side of the your radar when you were killing the enemy with the rocket. You are still fine because they are alerted not by you but are fighting the ambassador's bodyguard so you still safe within the objective of stealth.

Just go and enter the ambassador's office and you be finish with "Stealth to the ambassador's office" objective.            

Killzone: Mercenary - Mission 6 (Lights Out): Covert Contracts (walkthrough)

Contract loadout requirements: M133 Prox, STA-52SE

The mission requirements:

• Plant a charge on one of the coolant pipes without triggering an alarm 
• Achieve 5 proximity mine kills
• Kill 40 enemies with STA-52SE rifle 
• Destroy the jammer

Important Notes:
I'm not sure if this is a bug, a glitch, an error, or simply a secret objective that they don't tell you about. The four objective above is fairly easy to do and not so much covert if you ask me, but here the problem. I sometime when doing this Contract get stuck and unable to plant D-charge on the AA gun. The game wouldn't show the icon and let me plant it no matter what which force me to restart the mission again. It finally let me plant the D-charge on the AA gun after I restart and did something different. This problem does not show up on any other Contract which prevent you from planting the D-charge on the AA gun.

This is a theory of my but I assume it only allow you to planted the D-charge on the AA gun after you gain some "Stealth Bonus" in each area before you arrive at each AA gun. I'm not sure about this since I'm not going test it out fully. This is just an important advise for those who experiences this as well. I'm not sure if this method is true or not but getting stuck at an area before you finish the mission and restarting suck when you know you can beat it but it the game fault for not showing the icon. My advise is to gain some "Stealth Bonus" on this Contract just in case this might happen to you.

Found some links; it seem I'm not the only one whose experience this:
Mission 6 Lights Out AA gun bug
Mission 6: Lights Out Bug
Lights Out mission bug. on AA guns (Covert Contract)
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Plant a charge on one of the coolant pipes without triggering an alarm 

Just chooses one side to blow up and eliminated all enemies in that side silently before you plant your charge. Plant your charge after you eliminate all enemies on the side you going to blow up first and then push the button when you away from the blast and you done.

***Please read the Important Note above before you do this Contract.       

Achieve 5 proximity mine kills

Fairly easy to do and plenty of enemies to chose from on this mission. On this mission there time when there are no Jammer on and when there are Jammer on. If there no Jammer on then uses it normally and throw it at an area where the enemies might walk over and it will automatically trigger to blow up. If there are Jammer on then place it at area where the enemies might walk through and shoot it to trigger it to blow up.
            
***Please read the Important Note above before you do this Contract.
  

Kill 40 enemies with STA-52SE rifle

There plenty of enemies to kill with your STA-52SE on this mission.

***Please read the Important Note above before you do this Contract.       
      

Destroy the jammer

 

The Jammer is located at the 2nd AA gun area; it on the left side when you first enter the 2nd AA gun area. Destroy the Jammer first before you destroy the 2nd AA gun or else the one who going pick you up will destroy it for you after you blow up the 2nd AA Gun which will then make you fail this objective.

***Please read the Important Note above before you do this Contract.     

Killzone: Mercenary - Mission 5 (The Package): Demolition Contracts (walkthrough)

Contract loadout requirements: VC11, M194 Frag

The mission requirements:

• Kill 4 enemies with VC11
• Achieve 5 Mercy Kills
• Destroy an enemy Stinger with a frag grenade
• Destroy all 6 propaganda speakers

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Kill 4 enemies with VC11

There are only two location on this mission where you can actually shoot the VC11 and those location are either at the "Outpost" or at the end of the missions where you just zipline and waiting for your pickup. 

Achieve 5 Mercy Kills

To do "Mercy kills", the enemy or enemies must be injured first while dying and then you will melee them to finish them off. There are several ways to do this but let go with a quick way.

Use the Van-Guard: Arc Missile and it will injure the enemy quickly without killing them. However that only apply if it is a 1 vs 1 situation, if it a crowd of enemies situation then the Arc Missile will over-charge and kill the majority of the them and maybe leaving at least the last one to be injured so be warn about this. If you are using this method then put this weapon as your loadout and you probably be done with this objective at the start of mission.

On another note if you prefer to uses a gun then try to isolated and shoot an enemy in the legs slowly until he is injured.             
  

Destroy an enemy Stinger with a frag grenade

There will be several Stinger that will show up on this mission but the one you going destroy is the one that is flying back and forth around the "Outpost" after you rise the alarm at that area. Now I going assume that you will rise the alarm and eliminated all the initial and spawn enemies in the area first so you can focus on the Stinger.

Before you even begin, please shoot and kill the two passenger on the Stinger so the Stinger have less firepower. You be fighting near where Black Jack Supply is because you be resupplying and recharging the whole time while trying to destroy the Stinger with a frag grenade.

When doing this objective, please wear the armor: Supply for extra grenade and the Van-guard: Carapace for your protection against the Stinger attack. You will be throwing and missing a whole lot at the Stinger. If you are lucky you might land on top of the Stinger with the grenade and destroy it, but overall what going kill the Stinger is the "splash damage" from the surrounding area where the Stinger sometime stop at while flying. Land your grenade at those locations when the Stinger does stop or at least aim for the Stinger.        
      

Destroy all 6 propaganda speakers

Locations:

• Outpost (1): If you standing behind the mount gun position, it right next to it on the left side of the gun.
• Outpost (1): If  you standing in front of the elevator and facing it, it near it on the left side of it.
• Market (1): The complete opposite side where the Black Jack is facing. (near this elevator area but on the right side)
• Market (1): Near the general area where the officer is standing when you first got off the elevator, it near the left side corner of that area. 
• Market (1): Facing the exit door to the Market
• Bar (1): Around the the corner after you leave the Bar on the left side.   

My "Killzone: Mercenary" Walkthrough Lists

Here A List of all the "Killzone: Mercenary" Walkthrough I written. I may update this list when I write a new one but some walkthrough I will not write or do which I mentioned earlier in another blog post of my as to why not.

Not doing Mission 9 Precision Contract, because I can't do it. 

There are a total of 9 missions. 

Precision Contracts:
Mission 1
Mission 2
Mission 3
Mission 4
Mission 5
Mission 6
Mission 7
Mission 8 

Covert Contracts:
Mission 1
Mission 2
Mission 3
Mission 4
Mission 5 
Mission 6 
Mission 7
Mission 8
Mission 9

Demolition Contracts:
Mission 1
Mission 2
Mission 3
Mission 4
Mission 5
Mission 6
Mission 7
Mission 8
Mission 9