Generally had a good time with this one.  The other comments cover most of my notes, but one thing they don't mention that I noticed is that the game seems to end rather abruptly.  I was in the middle of a fight in what I think was the last room, with enough health that death wasn't a concern, when it transitioned to a screen with the game's title.  And this was my second playthrough; on my first playthrough I ricocheted a bullet off the wall above me, and then the game ended.  My best guess is that the game end is triggered when part of the player enters the end zone, and the bullets are treated as part of the player, so by shooting too far into the last room you win?

The graphics for this one are super neat! A few things I would look into altering: The enemy hitboxes are a little too large. I felt like I was getting attacked without even touching the enemies. Usually a slightly smaller hitbox that the sprite fits nicely, as its also a little more forgiving for the player. A shorter cooldown for the dash might also improve the games flow. Some meters to show the dash cooldown as well as gun heat would help the player as well, but I understand you probably ran out of time to add these for the jam submission. Otherwise, I enjoyed playing your game and can see its potential!

Nive idea and graphics! I really like the kick-back effect, although it is a bit too strong. Hard to tell when the game will look like when you finish, but I can imagine how it can be lots of fun with some upgrade/progression system!

Game looks good, have greate concept and potential! Cant wait to see full version after jam!

Nice graphics and the controls are good too. The screenshake effect is a bit too much i.m.o. Like the others mentioned, the ricochet mechanic needs a bit more modification. 

I love the concept! I do wish there was more incentive for the user to use the ricochet mechanic! Maybe some terrain that modifies the bullet? Speed, trajectory, status effect? Maybe a raw bullet doesn't do as much damage?

It was satisfying to move the character around and shoot enemies, and it's a cool demo and the start of a good game. The window size is too small and is the first thing that should change. Otherwise - it's the seeds of a nice gungeon-like that you can grow further. Congrats on the submission!

Its a solid enough prototype, but it really needs that time in the oven. Also, there doesn't seem to be any incentive to bounce the bullets intentionally, and the gun is accurate enough and the enemy hitboxes big enough (and the player moves fast enough even without the dash) that it's unlikely to happen on accident, so it doesn't really come into play?

I do like the gun shooting animation/particles though! And the dash is nice and responsive.

One more small note - the player's heath bar flips along with the sprite :]