Hey Faiaz,
I completed the game, and it was really cool! I really liked the art and the fact that the lighting interacted with the enemies. For just starting out you should be very happy with your accomplishment. Seriously good job man!
A few little things I would pick up on is that the time slow felt a little too slow for me. It may be because I'm running it on a different system and if certain parts of the code aren't put in fixedUpdate or multiplied by time.deltaTime, physics can start behaving differently on different devices. Although with time slow this probably isn't the issue. The point that I'm getting at is that the time slow felt a little bit more like it paused the game rather than slowing it down a bit.
Anyway I hope you keep making games because you'll only get better and better at it!
Best of luck!