Took me a while to realize what i was supposed to do, but when i did it was really fun. I would suggest having some kind of Audio cue when you are ready to submerge and to add some more invincibility after re-emerging, especially after having just hit a boat. Otherwise this game looks and feals great!
Viewing post in Torpedo-Rush jam comments
I realized I needed to make the main mechanic of the game more clear. I had falsely assumed that being a torpedo confronted with boats would be intuitive. After the jam end I realized I needed to make the submerge mechanic clear in the game, and that the left click animated icon on the "oxygen" bar was not clear enough.