This game is really fun! I like how unique your powerups are, especially the one that gives you allies and the ones that come with drawbacks as well.  You've got great juice and game feel, awesome sounds and visual effects, as well as screen shake and a really reactive UI.  I particularly like how the bullets drop when you use your ammo.   Sounds being different in slowed time is a wonderful detail, as well as the addition of a little music.  You've got good enemy variety, and the red enemies that ram you really force you to use the time slow mechanic.  

Two pieces of feedback from me:  I think the normal gameplay should have some kind of music track.  The majority of the damage I took as well were also at the start of a round where the game would freeze for a few seconds, and suddenly I'm surrounded by enemies, usually already been hit by the red rammer.  I can only make assumptions since I didn't make the game, but I wonder if spawning all the enemies at once at the start of a wave is causing the game to hitch.  If you haven't already, I'd look into using an object pooling system for the enemies.  Rather than spawning them and destroying enemies, the game would load them all and hide them up front.  When you need an enemy, the game unhides them, and when they are destroyed the game hides them and puts them back into the pool to reuse.  When you need objects to be spawned and destroyed often like in this game that can really help performance. 

Awesome job!

My playthrough thoughts:

• Pressing S to decelerate causes the wings to appear swept back, which seems counterintuitive, since I think swept-back wings usually indicate higher speeds? (I don't know why this is the first thing I noticed.)
• At first I thought that holding Space starts timesink, and releasing Space stops it. When I released Space and nothing happened, I then thought that timesink couldn't be stopped (and I was struggling to deal with enemies while locating the part of the HUD that displays timesink values). It was only after I kept thinking while playing that an unstoppable timesink shouldn't be good game design that I experimented more and realised that I had to press Space again to stop timesink.
• I play on browser, and the game stutters heavily now and then.
• The starting was frantic, with unfamiliar controls, a busy HUD, and enemies swarming me. But after I got used to it, I even found the playstyle and upgrades a little simplistic and wanted more variations. But for what there was, I did have some fun!

This was so much fun! Roguelike shooter that looks great and plays wonderfully :)

I really like the look of this game and the way the visuals merge together. The style felt clean, consistent, and well-executed (I love vector art + bloom), and I really liked the individual sprites for the player and enemies. The particles looked fantastic too, detailed but not overwhelming, and really spruced the whole game up. I do think there could've been a bit more visual clarity differentiating enemy and player missiles from each other, though, I couldn't really tell in the moment what was or wasn't trying to hit me as I only had a split second to look before flying away. Perhaps making player missiles blue like player bullets could help?

I do agree that the balancing was a little off. Once I got a couple upgrades and could circle around groups or fly away while shooting, I didn't really have an incentive to do much else. It was a repeating pattern of wait until spawns, Time Sink through the crowds until I get clear space, then just drag them around behind me until everyone's gone. Don't get me wrong, though, the gameplay was still super fun, the feedback on shooting and hitting enemies was terrific- it just felt a bit limited in terms of successful playstyles, though I know that's the main balancing problem for any game like this, really.

The Time Sink meter in the corner could also be enhanced a little bit- I struggled to read the stats in the center, and although I loved the moving texture over the top it wasn't easy to tell how much power I had left. The ability itself felt very strong, which from what I can tell was the point, so no complaints there. It also felt really fun to use, sufficiently like a time-warp drive!

I know audio has been mentioned a couple times too, and I do agree there should be a bit more of it- I think even a whoosh sound when a bullet gets close to you or something, to help join what I'm seeing with what I'm hearing.

As far as shooters like this go, this one was really good. It felt super satisfying to play, and I'd love to play an expanded version after the jam :))))

Nice! Calling it here.

Very neat looking UI and clean art work over all. The game chugs very hard on first instantiation of some effects due to shader compilation I think. The trick to get around this is to have a loading screen where you instantiate all those effects/shaders once so that it doesn't then stutter in the midst of action. This was my first time using Godot really in a long time and struggled quite a bit with the same thing. The web build shader compilation (on some machines at least, seemed to be slower on PC than Mac) really seems to be slow. But even if it'd be faster, it's not optimal to do it in the middle of the action when it will at least skip some frames.

Sounds too were good but some music really would have been needed. And there were some actions that weirdly had no sound. Enemies overall could also use some more "passive" movement sounds and even stuff like a warnings before a charge etc or something.

Sometimes it took ages to find the final enemies of a wave. Of course you could just stay still and wait for them to find you but you'd run the risk of getting ganked without any time to react. Some indicator arrows pointing at off screen enemies would help a lot. That same thing would make starts of rounds more fair as you'd have at least some clue on from what all directions you'll be swarmed at.

Guess I lied about that being my final run, went for another one but now at around wave 10 I can't find the final two enemies anywhere. I've been wondering around and even completely idling still for a good 5 minutes but nothing. Not fun really. And the same thing happened now a second time too. I had just one charger enemy left so as it was about to charge, I slowed down the time to trigger that very over powered mushroom powerup and the enemy just vanished not to ever appear again.

I find that the time slowing mechanic is maybe a tad bit too powerful (or recharges too fast after use or something). It kinda forces you into this awkward dual play mode of slow down & nuke everything and then kite around until you get your charge back. Then just rinse and repeat and hope you don't get stunlocked into oblivion after a slow charge ends. This strategy also makes quite a lot of the upgrades kinda moot. Like the shot speed (especially the rare one) seems awesome at first but with such a limited clip size, slow ass reload and the forementioned slowdown strategy, it's kinda pointless. So from all I've seen, it's basically just mushroom, ricochet, homies, clip size and finally slowness extension, damage reduction or maybe some extra hp (too much seems like  a wasted cost) when nothing better is to pick.

But the constant disappearing enemies forcing you to a soft lock really detracts me from going for a better run.

Anyways, good job! 👍

Good game, I enjoyed playing it. I know it is a design decision, but I think this kind of games are funnier when you can shoot without limits, there were some moments where you missed the possibility of shooting faster.