Hehe, I DID IT on Gauntlet!!!!!, obviously with the help of others, including Sexmachine, Trueblood, Dalton, I think holding me up. Cant remember my assistants exactly. Anyway, it does work, and it can be done
Other maps with escapes:
Dreary: A push-button in jail opens a grate that you hammer up to to get out. Dont hang around too long in the small corridor just after the grate though - there are nasty fan blades on their way.
SkullDrudgery: A switch in each jail needs to be pressed, then a door quickly opens and closes. Go thru the door and hope you land on the rotating thing below to be able to reach an exit there. If you miss, you dissolve in the "fruit juice"
Command: Again, 2 switches in each jail, press both, a grate opens up in the jails, hammer up and go thru. Another rotating thing, but you start in center and have to choose 1 teleport of the 8 rotating on the revolver. Some free you, others push you into the nasty liquid.
Deck16: One which i struggle to find why so few people can do this, or dont know about (since its even advertised on the screen in jail). A human ladder is needed by the little hole on one side of the jail. Top guy shoots switch at end of that tube, and if someone is standing DIRECTLY ON THE X, they are jumped up to a teleport. You have a 25% chance of freedom - the other 75% is a chance to meet some nasty monsters in the tank under the minigun area.
Ancient: A huge and fantastic set of escapes which the whole team can do, but I've never seen it done. Firstly, 2 people hammer up to the frame of the door. Next, they make a human ladder, and the top one crouch-walks thru to the switch, and presses it. A door which you cant miss opens (a trapdoor for the guy who pressed button), and everyone has ample time to get thru it. Firstly, there is a room with nasty monsters. Get passed them to a switch, which opens a door back where the monsters were. Get thru that door. Then you have to cross a bridge. Simple. Except if you fall, are shot by wall cannons, or are killed by a jealous enemy teammate shooting from their jail, nevermind. Those very lucky people who make it to the otherside have a very long drop to freedom. Lucky them though - a nice safe water pool saves them from death. I really want this one to be tried out online, since it requires the whole team to know exactly what to do, otherwise the monsters and wall cannons have it easy.
Doom: Never done really, since no one can be bothered. A human ladder up to a hole in ceiling. Walk through and drop in freedom.
EternalCave: Damn hard to do. Firstly, someone kills themself while hammering the 2 blocks in the jail to pieces. Next, someone else crouches in the corner, and other ppl can jump on and crouch-walk through. Then, they face the terrifying feat of a pupae. The best bet is to hammer it away to give you enough time to get the belt there. Get to the teleport, and enjoy freedom. Take a moment to apologise to your fellow inmates though - by doing this you spawn a nasty monster in the jail.
Mafia: A huge human ladder is needed i think. Either that or you need a super duper hammer jump up to a hole in the wall. Never seen done though.
Mutiny: Someone presses a switch behind the jail that moves a bookcase. This reveals another button, which they press, which opens the jail hatch. Prisoners have a chance to jump out.
Niven: Someone has to press the switch underwater by the tube, which allows prisoners to jump in that tube and swim out - as long as the free person presses the switch again to let the escapers out. Frequently the person in the tube ends up being the last man, since the free person gets killed if the other team is clever enough to realise whats going on. Nevermind.
Phasma: Still not sure if this is right or not, but: A free person (and as long if he ISNT the last man) walks into his team's escape tube to trigger a switch. In this time he is counted as jailed, so if he was last man he just walked into jail. Not clever. Anyway, when he walks into the green tube, the grating in the jail opens and allows people to escape. Watch out for enemy snipers though.
Pressurized: There is one, and I think you have to hammer up into the little corridor above the jails. Not entirely sure about this one though.
Rainmaker: Someone presses the switch on the other side of the map which opens the hatch in the jail. If you are on the hatch, why? You just get killed. Idiot. Anyway, jump down the huge hole and go into freefall. While you fall far too far, try to land in the "safety" of the goo pool. Needless to say, jump out as quick as possible, and if your lucky, grab the redeemer if its there. Get on the lift, and it will go up, eventually. If killed by floor cannons - tough. If lots of people jump out, try to let as many as possible on the freedom lift - it makes sense, unless your being shot by the cannons, of course.
SprinTitan: Hammer up to the window, jump out, and make your way to the windows at the otherside. If you stop to wave to the titan, he will promplty nail you with a rock, and he has infinite ammo. Keep going, and wait by the windows until they are open, then jump out. You are even advertised as escaping, so take a moment to revel in your glory.
AncientTitan: Press the button. A teleporter is revealed. Go thru it. You see a switch on the wall, so you are naturally inclined to shoot it. Good One. Watch your escape route disappear. It comes back though. Hehe, this can be a funny (but also frustrating thing for the other guy) to do if he is trying to escape across the narrow wooden blocks. Shoot the switch, and the other guy either falls into lava or becomes a pin-coushin. Why did you do that though? This is a teamgame! Anyway, get across, and then go thru the exit.
I'm pretty sure thats all of em that are played on the mothership with escapes (+ the ones that birelli mentioned). So, on the other maps, tough. Your gonna have to play fair and let your teammates release you the proper way. Nevermind. Its all good fun.