This game was fun in parts, but some sections are far more difficult than they need to be, often in ways that feel unfair rather than satisfyingly challenging. Firstly the colliders need to be smaller - so many times I felt I died from just walking close to a spike or saw without touching it, and I also kept snagging on platforms when jumping. Another thing is the synchronisation of moving objects - everything seems to be moving on its own independent timer, so in a few places I found myself waiting ages for 4 or 5 objects to sync up perfectly before I could safely make a jump. It would be better if these objects were synchronised so that they configure themselves the way the player needs more often.
The controls could also benefit from some tweaking as it felt they lacked a bit of precision, which is very important in a game like this, particularly the minimum jump height which caused me to launch headfirst into a few sawblades when I was trying to make tiny jumps!
More (real!) checkpoints would be good too - the levels seem quite long and having to restart them on each death can be frustrating. And the fake checkpoints are just evil!
The game could be really good if you can fix those issues.
I didn't manage to complete the game because at the start of level 2 I walked onto a grey box that I can't seem to jump or walk off. Perhaps if I'm feeling masochistic later I'll give it another go.