Why is it taking so long for me to get that fireball challenge done? lol I realize I'm as bad as Caboose when it comes to this. If you guys can give me a few tips it would really help, thanks. :)
1. Find Plasma Grenade. 2. Engage enemy in close quarters. 3. Stick enemy when he tries to melee. Rinse and repeat. 4. ????? 5. Profit! (I was told by a friend of mine this works like a charm, haven't tried it myself yet) [Edited on 09.22.2010 4:55 PM PDT]
All I can think of is that if you can get into Elite slayer, and just don't mind dying quite a bit for that one match, you might be able to pull it off (I still can't do it though, most I get to is 4/8 no matter what the gametype).