The flames should be able to die with three hits, may be some odd collisions or some misplaced clicks. I'm glad you enjoyed it, especially the animations. I cranked those out a few hours before the deadline and I was really happy with how the robots' animations turned out - those are my favorite too!
I actually never thought about leaving traps, I assume you dropped some nails at the bottom of a pit and had the enemies chase you into it - that's a great idea! It's really cool to see people using a mechanic I thought of in a way I never intended, nice going. Glad you got some fun out of the submissions.