need some help with multiplayer achievements in doom 3 bfg

Hello, I'm wondering if someone here can help me get 100% in this game? I need at least 2 people, there are 6 achievements that I'm pretty sure that can be done in at most one hour. I'm writing here because I don't know any good achievement hunters group and because I know this forum is always vibrant I hope that I'll find here people to help me with those achievements;p.