That was an absolutely wild ride. The gameplay is super fast paced, which I really like. The revive-rewind system is really well implemented, and I like how it puts you right back into the action and continues the flow of the game. The boss fight is fun and hectic, and it's pretty funny seeing a bajillion clones shoot a bunch of bullets. The best part of the game is the movement though - it's super fast and the slide and down-attack jump allows for a lot of skill expression.
I think you could have made more use of the enemies. The flamethrower one in particular is actually really well designed, since you have to be careful with your shots so your clone doesn't mess it up, but it's used in so few levels. The level with the turrets had some really fun dodging, but again, I would've like to see more levels using them. Controls felt finnicky at times - in particular, sometimes the walljump didn't work. I also completely forgot about the slow-down mechanic. I'm not sure if that's a good or bad thing, but I managed to beat the whole game without slowing time down.
Overall, very enjoyable and hectic game. I had a ton with this one!