I like the concept! Here's a few thoughts:
It was pretty tough and I was a little confused why my character only shoots sometimes when clicking with the mouse.
Having to hold E to slow time made it tough to move the character with A and D. Maybe try binding it to Ctrl or Shift or something? Could just be me.
Other than those things I could see the slow down mechanic being a really cool idea for platforming. I liked jumping through the neon gate thingies in slow mo.
If you want to check out our team's submission you can find it here, I did the music and sound: https://cryptidtriptych.itch.io/cyber-hearts