Challenge boosting please help

[fyr2]

Is anyone willing to help me with some of the challenges? I'm going at a pretty decent rate but my abilities with the spitter and lurker are not so good lol. Willing to reciprocate and help others obtain challenges. This is for ps3 by the way.

[predxeno]

If you still need help, check http://www.playstationtrophies.org/forum/aliens-colonial-marines/ for help; it's a site dedicated to Platinum Trophies.