Hey Shree, thanks for commenting, it means a lot to us!
I'll try to make the screenshake less annoying in the future; from what I saw, it can add a lot to the game feel, but too much of it has the opposite effect. And about the time slow, in the principle we thought about having more stuff simultaneously on the screen, so that dodging shots and other enemies would be necessary to get out of a tight spot. However, in the current state of the game, I agree with what you said: that mechanic doesn't add a lot gameplay wise.
Again, thanks a lot for your feedback: I'm sure it will help us not make the same mistakes in the future :)