I'll be honest, the game wasn't very good. But I'll give some constructive feedback, which will hopefully be helpful. And, it's not to say there aren't some good ideas here.
The UI: First issue was with the UI, which was difficult to read at all. The tutorial message overlapped with various other parts of the UI on screen. Also, the in-game UI, the /10 objects found, was very loud and often the brightest thing on screen.
The movement: In future, I would opt for a more intuitive movement system, one that's relative to where you're looking at the very least. This one took a lot of getting used to, and I couldn't see any reason why it would be like this. I could see a place for this movement as some kind of temporary status-effect, but not as the core movement mechanic. It was disorienting and keeping track of which key to press to get where you wanted was confusing. Some kind of directional indicator would have been a significant improvement as well. I got about one object in before I'd had enough of wrestling with the movement system.
The time/gravity manipulation mechanics were cool, probably the most interesting part. I feel this would have been interesting enough on its own with a standard movement system. You could also have the player take damage if they get hit by a floating obstacle, so they have to be careful about when they use their powers.
For future games, I would:
- Focus on making the controls feel nice to use, and not get in the way of the experience
- It's ok to confuse and disorient the player, but underlying that needs to be a sense of fun, and it needs to be done with intention. The way the player interfaces with the game should be intuitive, even if the obstacles they're overcoming aren't.
- Focus on making the UI clear and readable, but not too loud. For example, the tutorial message should be on a blank background. The "OBJECTS COLLECTED 0/10" could be a simple image of what you need to collect next to 0/10.
All the best with future development.