In not sure it's the worst in the entire franchise, but ACM's story might be the one I hate most more than anything else.
The fact they had the outright gall to expect us to accept that someone who just happens to be wearing bandages in the exact same places as Hicks manage to find his way onto the Sulaco and then conveniently got thrown in his cryopod...
Yeah, f*ck that game. F*ck it hard. With a crowbar.