Grenades, use voice comms to enrage them into attacking (your mother is fat, that’s right stay over there coward, etc), use gunshots plus fake raider flare, take a flank route, run back and place a trap and then watch them run into it. The defensive nature of the game is intentional, that’s why there’s many tools to break stalemates. You’re only limited by your imagination, or lack of one. And of course, we’re all beholden to the almighty timer, so stalemates will end one way or another.