A very destructive glitch: Blow up a barrel, then drop another one. It'll explode, and you can continue doing this. This is great for giant groups of enemies! I call is Fire dashing.
Wanna make the "Back to game" and "Back to map" buttons look different, or atleast make it have a "Are you sure?" thing?
That fucking pisses me off how I just quit on wave 14 on a 15 wave level.