interesting idea !
a some jank here and there for now, but that's expected in a jam game, if you keep working on this it could be really fun !
i love how the music changes depending on what mode you're in
i think maybe watching the replay could be a bit faster, especially if im going to fail id like to get back to trying again sooner, since there's nothing to do while watching the replay it doesn't need to be in normal speed
another small thing, when the replay has finished, it would be nice to have a visual / audio cue you can continue into ghost mode, sometimes i made a really long recording and forgot where i was just standing in place and where i ended it
i saw you said you are thinking about making the ghost mode have limited time, i think that's a good idea
sometimes it's impossible to know where the enemy is gonna be / where they're gonna spawn outside of ghost mode, so i think some parts should be tweaked to be able to predict that or have spots you know for sure are safe, unless you wanted it to feel a bit unfair
early on i figured i can slice the snakes through walls so i thought that's what you're going for, stand in a safe spot and plan the projectile, but later that became impossible, then it became less of a puzzle and more of a luck thing
good job with making all of this in such a short time tho, concept is full of potential !