In BMDM, I think that it would be a great idea to have some sort of game mode based on TF2’s “Mann vs. Machine” mode, where a team of players fights against waves of HECU/Aliens. Possibly, like in MVM, the players could get “money” with each kill which lets them buy powerups (possibly health packs and ammo?). The objective would be to either to survive all waves and/or prevent the HECU from reaching an objective (maybe killing scientists that you are protecting).
Thoughts?