... how was he good at the game he was in before? he was playing a heavily strategic military fps game right?
this seemed like a generic mistake someone would make during their FIRST time playing ANYTHING...
The second he's seeing the other members struggling to do any NOTICEABLE damage he should've told them to regroup and take another approach or avoid it altogether.
This is becoming one of those last moment, hero returns, friendship is magic bullshit again...