Well a couple of weeks ago, i was playing h3, just forging and i found myself outside of foundry. I dont know if this is completely new but i will share it anyway. THIS HAS ONLY BEEN TESTED ON FOUNDRY. To start off, place a box (single or double, just not an open box) on an edge of the map. I placed the box tight next to a wall. Set respawn at start to NO and restart the round. Once the round has restarted, go over to where the box will appear and stand inside that area, right next to the wall. You will be able to tell when it spawns, the edges of the box will appear. Next, look down at the ground and melee. You will be pushed out of the map, but be sure to quickly change to forge mode, otherwise you will fall to your death. Hope this helped, im going to try with other maps soon.