You did great job as a team, game looks very polished (almost), especially the art. Also I liked 2nd boss music theme.
And now about "almost" part :D
- Sadly I got the best misunderstood feature in the game, if you know what I mean; :D
- Bosses could have death animation, they just disappearing on death a bit ruins the general mood, because you gave them some personality and then on death they are just deleted. Like they could say some last words and then explode or something;
- Some music on the initial cutscene (with the frog island face) would be nice, cuz initially i have thought that the game has no music at all;
- Weapons felt a bit too similar. Like iirc 90% of weapons use the same bullet sprite, just number of bullets and their damage that varies. Like for example shotgun would be defintely nice addition, cuz it is actually changes your playstyle, that you need to come closer to the boss to deal more damage, but then higher chance that you get into one of the boss attacks;
- Small thing, but still. Wheel of fortune's bomb attack is too weak, like you dodge it by just running. But you run all the time anyway, so it makes this attack non-existent. So this attack could get some kind of buff;
I understand, that you, perhaps, didn't have enough to fix all the stuff, so I just wanted to list some things you may want to consider to fix in the next version.
But nevertheless, again, it was nice experience.