Killzone: Mercenary - Mission 9 (Exit Wounds): Demolition Contracts (walkthrough)

Contract loadout requirements: Porcupine, STA-3

The mission requirements:

• Kill 10 enemies with the Porcupine
• Kill 30 enemies with STA-3 LMG
• Brutal Melee 4 troops in succession
• Kill the heavies in 2 minutes

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Kill 10 enemies with the Porcupine 

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

Kill 30 enemies with STA-3 LMG

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

Brutal Melee 4 troops in succession

Recommend you (the player) to do this objective at the start of this mission contracts.

• Will Count: Melee, Melee, Melee, and Melee
• Will Not Count (and you will have to start over "If" you): Melee, shoot, and Melee 

      

Kill the heavies in 2 minutes

 

Recommend using VC9 Rocket Launcher (for direct attack) or M327 Grenade Launcher (for quick attack). Either one will do the job as long as you (the player) aim correctly without getting kill.

If you skilled enough you can do the old fashion way, which is uses a gun to shoot them in the head to make them turn around then you aim for the tiny fuel tank in the back to blow them up.