"Error: Couldn't load project data at path ".". Is the .pck file missing?" happened when I tried to download but browser worked fine.
Hitting an enemy/taking damage could use a lot more feedback, Hit stop, flashing frames, clearer visual effects. I couldn't tell if I had damaged the slime until it split apart as its health bar didn't deplete until it entered its final form. I noticed when attacking any enemy they would be invulnerable to any other attacks unless I moved away? It wasn't clear if they were in an invul state as they didn't flash or show anything different about them. I would mash the attack button against the mushroom and only the first attack did anything.
Orca was very annoying since it never telegraphed its attacks, especially the underwater one since it does like half your health.
The castle walls prevent you from moving anywhere once you touch them but slashing them lets you clip through and trivializes the encounter, was this intended?