I'm not positive if this works on the updated version, so try your luck and it only works on solo due to quick revive.

Buy quick revive once. get downed, or hold a grenade. Buy it a second time, and have a crawler at the end of the round.

Go up to quick revive, (having it bought a 2nd time), stand in the corner by the wall, and have the crawler hit you while jumping. The crawler should hit you once, and the second time you will get downed and boosted on top of quick revive.

While on top of quick revive, manage your way around, to a point to where you can buy it the third and final time. After you buy it, it will shake and fly threw the ceiling.

You will go up a little bit, and then fall straight through the map.

Your gun will disaperar and you cant do much but literally stare at the sun.

Ive made it past round 50 by this and got board, then turned it off.