Very cute graphics! This is an interesting take on the Bomberman gameplay. I had fun playing it, and the graphical work is absolutely top-notch.
The movement is somewhat awkward. It feels deliberate, though, and it does add to the challenge. It did feel maybe a little too smooth at times. Between that and the long timer between bomb spawn and explosion, the game feels somewhat ponderous. Maybe the main character could be a little easier to control and the timer shortened? That might be worth tinkering with.
That said, I liked this game. The core gameplay works well, and you've made good use of the limited palette.