I think the concept is really cool
But I think the main issue is that the sprite is far to large so I struggle to get it through the holes and the char is a bit to fast at the moment so sometimes I end up completely missing them (but again I think this is due to the sprite being to big)
I also think that there could be a bit of music and a timer would be really good
On the first level the bomb disappeared before I could get to it- maybe the Collison box is a little to big? I'm not quite sure
But it looks really good, looking forward to seeing more :)