Great that you made the entire game by yourself! I like the audio and the idea that you can encounter new types of fish any time. Funny, both our games are submarine games made in construct, but the controls are so different. Took me some time to get used to, but that is because obviously I'm used to the controls in our game :). I'm curious what you prefer. For your combat focused game the controls you use probably work way better.
Nice game!