I'm playing on my laptop, so using the "mouse" and keyboard at the same time is a bit difficult. There were often times where I would try to move my character and an object at the same time, only for one of them to get stuck. I would suggest either increasing the range that balls, umbrellas, etc. can be controlled, or remove obstacles. Additionally, the timers are WAY too tight, even when playing on the easy story mode. There were times (especially in the water freezing level) that I would be able to do something with the water only to then run out of time before I could continue working with it. Also, it is VERY unclear when something is an underpass and not a straight up wall. That also caused a lot of time being used up in the ice level. I probably restarted it four or five different times either because I ran out of time or because I couldn't find what I was supposed to be doing. I would suggest adding mid-level checkpoints of some kind.

Finally, I had to stop playing when I got to the waterfall cavern level. You literally cannot get out of the water no matter what you try and restarting a level takes FOREVER since you need to go through dialogue, walk to the console, manually type in 'airlock', and then go through more dialogue.

I'm giving this three stars purely for the concept and design philosophy, but there definitely are a few things to rework to make it not only beatable, but playable. (I did not even try doing it with enemies and apparently you don't even get a good flashlight in that mode??? Yeah, no thank you...)