The overall smoothness of the game, including the visuals and design, is pretty good. Other reviews have also mentioned one issue: the game is a bit too difficult. The hitbox of the spike traps is too large, the corners of the jumping platforms often get the player stuck, and there are some problems with the jump height as well.

One especially important point is that the game really needs checkpoints!!! Over the past few days I’ve been spending almost an hour each day playing, and many times, after struggling to get all the way to near the end, I died and got sent straight back to the starting point. That feeling is truly devastating.

I don’t even know how many times I’ve slammed my desk just trying to beat this game — it’s the only game that’s managed to tilt me this hard. If you could reduce the number of traps, or rearrange their placement, and add more checkpoints, this game would become really great.

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.

Nice game, sometimes found myself getting stuck on the edge of a moving platform causing me to die. Some areas felt very cluttered and hard to get the character through and I often found myself forgetting about the shrinking mechanic altogether. Nice simple concept that works well and looks nice but is often unforgiving.