I am glad to read your comment.
In fact we are french and we mess by having our move hotkeys on "AZERTY" keyboards... ><'
The main feature was about the random firing. Each bullet have a special effect by touching mobs.
Here we had a sponge, if you touch him with water he will grow, with wind he (was supposed ><) to get knock back.
We tried to implement a "oiled state", if he touch a oiled platform he turn into oiled form (we had the animation and all :( ) and become immune to water but weak against fire.
But we were too slow to implement every ideas, next time will be better I hope ;)
Thanks for your comment. You made me smile ^^