Hey Matt, I'm posting this after the full release of your game.
I'm glad you implemented so many changes in just a day. The new version of the game is really fun and it feels great to play! I felt a lot of the accidents were my own fault instead of the game this time and that's awesome to me.
First the negative stuff, I wish there wasn't so many enemies in the new level. I attempted to speed run the game for a good hour or so (I'll make another post about that) and one of the only things that annoyed me was having to deal with 4 enemies at the end of the new laser level. I was never able to kill them without spamming my primary fire when I was speed running because the laser is in a place that makes it impossible to jump (at all) unless I stand at the very beginning of that block. Stopping at any point made speed running significantly more difficult and this is probably the only place I really had to stop otherwise I'd be punished for it. So if you ever update the game again, I'd like either the laser to be moved to allow jumping over the enemies or just less enemies or more maneuver room, something like that to make that section a little easier so you don't have to stop and kill them all but can just keep going should you so choose. (Edit: I found a way around this but it's kinda sneaky and it involves not killing most/all of the enemies. See the gif here: https://gph.is/2WxHykR)
A quality of life improvement I'd also like is some sort of button to go back to the main menu. This would help and encourage speed running.
I did encounter a bug a couple times. I've had trouble replicating it. But, I have a faulty mouse so sometimes when I hold left click down, it will double click really fast. At times I believe that happened and it generated the previous level as well as the next level after the fade to black. I can't guarantee it was a double click that did it because I wasn't able to replicate the bug while manually double clicking and I didn't think to screenshot it when it happened, but I did have a few occasions where the game loaded two levels at once after trying to go to the next level which could only be fixed by closing the game and reopening it. I wish I could tell you how to replicate it but I'm just not sure right now and my only lead is potentially my faulty mouse double clicking at god speeds, but I'm not sure if that's even it.
Well, that's all the negative stuff. Now for the good stuff. I'm glad you fixed the sword and added a reticle, that feels so much better and my FPS senses are appeased. Less environmental particles made it easier to see the enemy projectiles as well. Being able to one shot enemies feels fantastic too. It felt so nice lining up the crosshair and shooting just before a jump, landing, and seeing the enemy no longer there. I'm not sure if the player hitbox was changed at all but everything feels a bit more fair now, I never felt there were any deaths that weren't my fault. I still find myself letting go of W or jumping sooner so I don't overjump but that was mostly a problem I had on just my first playthrough so I'm not as worried about that anymore having played it for an hour or so now. Also, not having to kill all the enemies is a welcome change, I like it a lot.
Lastly, the flow of the game is awesome. I can go fast paced or slow and methodical and that's great to have different playstyles for the game (although my favorite way to play is just holding W and shooting all of the things).
Overall, it's a great game man. It's so impressive that you did this in just five days of this month. I can't wait for the next game a month, this one was awesome!