rlucky73721

is the reasearch lab where the 2 scientist are working and the same spot you turn off SAM? if so ive beed all over there.

thanks anyway, ive just been playing it non-stop for 2 days trying to beat it after a lil break and its so frustrating not to be able to continue cause there are no other missions open but this 1 and i looked everywhere. there is a yellow marker that i see but its like its hidden behind a wall or something cause i cant get to it. it looks like its in 1 of the 1st rooms where the vehicle is but there is nother there but a huge crate with a war head or something in it.

i have been all over the internet looking at walkthroughs and everything and it says all i have to do is bump into a scientist and he will drop a pass key. well i spent hours trying to retrieve the key and nothing works. i bump into them, i follow them while they panic, i kill them, i let them live, i restarted the x-box.... everything for atleast 4hrs. is there something wrong with my copy??? or am i missing something? please help im desprate!