Awesome game!!! Reminded me of old underwater adventure games which I used to play. The chiptune music takes it to another level! Really had a lot of fun playing!
Things which could improve it -
1. Some (in-game) instructions for people like me who don't read instructions lol.
2. While moving sideways the diver can also rotate to face that direction
3. When moving sideways, the diver becomes SLOWWWW!