Tower of Dawn April - Floor 100
Uh... I derped in the video but you guys should get the general idea of how to do it. Uh yea, i forgot to use hellfire and didn't bother building gauge, you can definitely play it better than me :3
Strat:
2cc heroes to keep the killer machine under control until you can kill the healers. Also add in a melee damage dealer, my choice here is Dom.
Kill the turrets and rush for the healers. After you kill the healers hellfire and kill the killer machine.
Required heroes here are probably Jack and Lena with the other three being pretty flexible. Jack obviously has to be powerful enough to one shot the fairies. You can give him some assistance with hellfire if need be. And, I can't remember what the killer machine's immunities are, but cheap stuns along with yeka make it pretty simple :O! You can build gauge with scissor heroes if you want and directional advantage which I didn't bother doing, but generally you can just grind away it's health slowly and that's also perfectly viable.