I think it is an original approach to the theme. The graphics are nice, I like the player animation, but I find the sounds a little annoying

It's an interesting take on the theme. I like the idea of going back after the boss is dead. It's a little bit hard for me, so I literally can't go past second pair of enemies, but the game feels great.

https://chucklefart.itch.io/lost-wallet Please click this link to see instructions/controls for the game. 
As has been noted below, there are severe audio mixing issues, there wasn't time to properly integrate the sfx, so things like the eel make a pretty terrifying noise (the original noise wasn't quite so scary i promise!)

When I first entered the game, I couldnt get how to play. So, I just pressed all the keys on the keyboard and when I finally understood how to move and fire, I did not know where to go and what to do. It would be better if there was a menu and instructions. The snake was really scary and it scared me every time I saw it. It should be because of the audio. Also I couldnt feel comfortable while playing so just closed the game really early. Without scary things and scary sound effects, and with a menu and instructions it could be really nice.

Things I liked, You had a great artstyle and I really enjoyed swimming around and trying to get past the clownfish lol. Your idea for rewind as in playing in reverse is cool and I would love to see some extra things done with it.

Things I didn't like,  I feel you could have benefited both from a menu as well as instructions. I didn't really know  what the buttons were and I had to figure out how to shoot. In addition it felt way too easy to get hit and die, the one bubble for initial health was useful but I feel only served as an extra hitpoint and nothing else besides that. If it was something that came back after awhile I feel it would help out immensely.

Overall though, its a pretty fun game and you should be proud of how much you got done in week. Good luck with any future games!

- Von Harley