Replying to Official Black ops nazis thread

how well have you guys been doing? I haven't unlocked any levels so I've been playing the stage level but it is fuckin hard. But I think we just found out the key. It took a while but its working well. We made it to level 20 but could have made it much farther with better guns and not making stupid mistakes. Ill let you in on my strategy if you want, but I don't want to spool it for anyone. By the way, has anyone beat 20?