Cute little game.
Seeing your page, this looks like your second ever game, this is pretty good considering that!
I wasn't able to find any dynamite like is shown in the cover image, not sure if that just didn't spawn or if it's not supposed to.
The floor would look a lot better if the sprites were tiled rather than just one big object stretched out to fill the space.
The sprites themselves and the background looks good! Good job.