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Old 09-03-2011, 02:51 PM   #35
PC_GFWL_GAMER
 
Join Date: Sep 2009
Location: London, England
Posts: 205

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Popped for me 1st time I tried it today. Just make sure you down 11 enemies & leave 1 alive then go back to the start of the level where the ammo crates are & shoot the fire extinguisher on the wall above the shaft you climbed up to get to the last level. Then carefull shoot the other fire extinguishers & then go for the gas cannisters but obviously if the enemies shoot any before you do then you have to restart the level.

Should be 18 in total so as long as you count as you shoot them its all good!
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