you have to stand in one certain spot it is kind of **** but look at the objective
checklist and it'll show u where to stand

there is a glitch in this spot sometime pinhead will NOT follow or he will stay behind a
rock the only way to get him in place (At the extraction)is to walk up to him and somehow
push him up to where he should be sometime it's a long processe but it works

you walk around and bring him behind you or just tell him to follow. then in time a
chopper or some vehical but i belive a helicopter.thats your way out. i havent played that
level for a while.