Seems like it could definitely be a fun game! The graphics are simple, but nice and the UI is quite polished; I only have 3 suggestions for the game's visuals: (1) Certain UI elements use the default Unity font rather than the more appropriate pixelated font (2) The background tiling could be a little bit smaller, otherwise it makes the player look tiny, and I'm not quite sure that's intentional (3) The player is on a lower sorting layer than the tileset, meaning the player will often clip into walls or ceilings.
As for gameplay, I wish I could scale the platforms by holding 'WASD', rather than having to keep tapping in the direction. The use of cinemachine was good and felt dynamic, though, the way the player's jump is right now, it feels a bit too high and a bit too quick, and whips the camera up in a way that feels nauseating. I'd potentially recommend a jump that uses forces, rather than setting the velocity directly, which at least I think is the current approach.
Other things I feel like are a bit too slow and sluggish; having to wait a full second to move each time you fire a beam feels like it could be a tad faster and having to switch between two separate beams is a bit unnecessary, especially if there isn't a good reason for it. Maybe you could just hold shift to shrink the platform, and let go to increase its size? Finally some check points would really be appreciated, since having to redo 5 minutes of progress is not the most fun thing in the world.
I definitely would want to play this game again as changes are made and improvements are done! I don't have a lot of time to work on my own project at the moment, but I have time to chat here and there if you need help with anything in Unity or want more feedback! Also, apologies in advance if this comes across as being overly critical, since I'm not sure what kind of comments you're looking for, but I will at least say there's a lot of very good technical work being done -- it just needs a little polish and tuning in overall game feel and game design! Looking forward to any updates!