I played to around 12,000 score. The game is simple and easy to figure out. I'd suggest changing it so that the character is centered on the mouse, rather than the mouse being at the top corner. It will help with movement around the edges, especially the top.
It did not feel like the difficulty was increasing, and unless there was bad RNG, it seemed like I could just go on forever. The game could use with something more to keep it interesting. Slowly speeding up the movement of the bombs over time could help. Some background music would also be nice.