Very nice and polished. Art and the effects are nicely done. I like how dashing also breaks doors.
The bombs take too long to explode so throwing them didn't really work since the enemies kept moving outside the explosion area. Once I did manage to drop the bomb near the enemy, but it didn't do any damage.
Also, at the end it wasn't very clear that I was supposed to collect the gems. Maybe try making them bigger and have an animation on the gem count UI so that it's clearer.
Great work overall! Good luck! :)