In the north:
I don’t have a crowbar, which is a nuisance.
I can’t really get away with being visible in that W medium tile, because then the four newcomers will charge into the central tile and shoot W.
If I take the prisoner down the hole, then I’ve used my +1; turn 4, come back up and move stealthily N; turn 5, E, S, open, but I can’t get out, and there’s no shooting involved.
Turn 3: move S stealthily, hoping the central-tile enemy doesn’t move west. If he does and spots me, I shoot him.
Turn 4: shoot E; move E, plant charge, move S; save one action to shoot the two newcomers if they spot me. Turn 5, use the charge to clear the central tile; open trap and out.
If the turn 4 shot doesn’t get both of them, we’re in trouble. Action 2 is shoot again, 3 to move E. But we’ve only got one MG nest to hide in, and the prisoner needs to survive. Ducking north doesn’t help.
Everything seems to hinge on clearing out the central tile with a single shot, which isn’t good odds. Can either of you come up with anything better?
In the south, I’ll wall-hop N onto the western medium tile.