Very good gfxs, the animation is ok, the gameplay simple but effective. Nice music too, though a bit short.
I found a bug: when you go to the sewer, go right. A first column prevents to go further, but when jumping over it, the character can get stuck. I was somehow respawned in the wrong place, floating above. I could reach the ladder at the top, fortunately.
The respawning is also a bit problematic when moving back to the screen you just left! It would be nice if the bad guys wouldn't respawn so quickly.