i think i found an exploit on wave 1 and yes this footage is wave 1(the footage on the bottom this one is wave 3 - ish)
you can stack these traps on themselfes
I don't feel like your sarcasm is necessary. You have to remember this is still a game made in short period of time. I've tested the game with dozen of people and we just didn't catch this bug/exploit.
Thank you for your collaboration and I'll do my best to fix any bugs anyone finds and properly reports.