It's an interesting concept, but I feel like the usage of a fixed perspective isn't as strong as it can be. The angle I'm looking at should tie into the game mechanics somehow. Additionally, Some jumps felt far too technical to figure out with the camera restrictions. For example, level 3 required me to enter the blue portal and hit the green. But, I didn't have a way to easily see myself and the portals. Therefor, it felt less like puzzle solving and more like guesswork. I do like the usage of a fixed camera to construct spacial puzzles. However, I think the type of puzzle need some refinement and iterating on.