Cool and well made game. I think the main source of inspiration are games like Enter the Gungeon and Nuclear Throne. I haven't played those yet but i know how they look like. 

Combat mechanics work very well. Reloading looks very cool and adds depth to gameplay. You  can buy stuff and get upgrades, that increases the game's score.  There's line of sight mechanic like a true trad roguelike, another point added. 

Things i didn't like:
- You can carry only 1 item at a time. I mean there's an inventory system in the game more or less. Just make it 10 slots why i can carry only one item?

-  The way you use items in the inventory is too clumsy. You shoot the medikit, pills scatter around and you collect them. Why do i need to waste ammo to use an item. It doesn't look good unless i'm missing something. 

- Some kind of automap would be great bcs you keep running in circles while your vitals are going down and everywhere looks so similar. There's no distinctive area or point of interest you can use a landmark to get some sense of direction.

I like the game in general. It's nice to see a Enter the Gungeon style game in the jam. It adds variety to the jam. Nice work!

Cool ammo mechanic! I wonder how would it play like if you had the pick up the bullets where they land, not where you shot them.

I enjoyed this game. Didn't manage to beat it, but I thought the gun gameplay was fun. I think a minimap would be nice, as well a bit more variety in enemy types. I appreciated that the merchant responds to the things that you're doing when you come back, that's a nice touch.

I had a lot of fun playing! I am on the fence if I wished there was a mini map. It would be useful but not having one added to the mystery of the world. The story was also compelling between the progression of the keys and the conversation with the merchant.