Pixel art looks great. The little crab animations are quite well done. I think I managed to defeat the old man (he stops attacking or do anything) but nothing happens afterwards.
There are a few things that can totally help the game I think:
- Smaller map with clearer zones with some sub-theme for each zones, current map is quite big with not a lot going on (the sprites look great though)
- Some feedbacks on enemies when damaged, can be simple as a flashing red, which would indicate that they did take damage.