Nice Sprite of the Snail and the Terrain. Really cool mechanic for the bomb difusial.
Cool that i could only take the Hard Mode ;)
I didn`t like the slidiness of the snail, i think it doesn`t fit to the nature, because snails are usually very sticky.
You could work a little bit on the jump curve of the player character.
Well done, especially if it took you only 3 hours