I really like how your game looks—those sprites are awesome! At first I thought I could drown in the water, but then realized I could just walk over it. :D
The screen transitions are really well done too—I might borrow that idea for my next game jam entry!
The animations are great: burning in lava, the skin changing, and even putting out fire with water—so creative!
And the mechanics with the axe, dynamite, and the fact that everything can be destroyed… wow! Hard to believe you managed to pull this off in just 3 days. :D