Killzone: Mercenary - Mission 3 (Lightning Strike): Precision Contracts (walkthrough)

Contract loadout requirements: STA-18, M194 Frag 

The mission requirements:

• Headshot 25 enemies with STA-18 pistol
• Finish the mission in 20 minutes
• Achieve a kill with a D-Charge explosion
• Kill a mounted gunner with a frag grenade

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Headshot 25 enemies with STA-18 pistol

For those who are good at using pistol then there no need to read this, however for those who are not so great at using this type of weapon including me will heed my advise. My method/advise is to get close and personal until you sure you get the shot. Always aim when taking the shot.

Finish the mission in 20 minutes

If you finish all the other 3 objective early, then this time limited objective will be less of problem because you be using your prefer weapon of choices by now. Which in turn make you kill and move faster.  

Achieve a kill with a D-Charge explosion

Please refer to the D-Charge location (Of my previous earlier blog) for more information. On that note, just place a D-Charge at that location and lurk an enemy to blow up.
   

Kill a mounted gunner with a frag grenade

The mounted gunner is at the location after you exit the generator room area. It easier if they (the gunner) can see you and are shooting at you; this way they are less likely to move away from the mounted gun when you throw the grenade. But of course you can "Ghost" in and throw it behind them however most of the time it doesn't always count because they move to dodge it so it safer with the above mention method of my.