At long last the land begins to heal! I liked the area that you had laid out and the difficulty increase from oasis to oasis seemed to increase at a pretty reasonable pace. The final tree boss guy was pretty brutal with the massive bubble spam and I narrowly survived with like 5% water left lol.
One tip that may help for future game jams is to consider using the texture “nearest” setting so the pixel art will show up a little crisper. It looked like the player and the enemy textures were using “linear” which makes the pixel art a little blurry. Overall really well done! Movement was crisp and the attack was easy to use to kill enemies.