Sorry for the double post but I was playing around with the console commands. Teleport doesn't work like it should. You can keep track of your coordinates when you enter debug camera mode but adjusting them with Teleport only moves you forward or back. Adjusting X or Y works the same as adjusting Z. If you adjust too much, you teleport into the void and fall forever. As far as I know, you can only reset by turning off the game.
Also, you can use the debug camera (; key) and then left mouse click on an enemy, then use DestroyTarget to kill it. Be careful though, you can delete the background which includes the floor too. It's pretty funny to see all the enemies fall into nothing though.