Lastest version has Purge Switch only accessable with Waster Electric Boom upgrade, Wall Run Boots & Grapple Hook ensuring for atleast 10-20 waves until you can get both upgrades from the slot machine to leave or keep fighting for higher waves. Careful the Bouncers at the exit may spawn at higher waves and if you don't have enough of the gear needed to each the purge switch it may be more difficult. 2nd level and feedback or bugs to fix lmk. Can't wait to be able to play this co-op one day. S/o WAD for one of the best level editors ever.