Playing an swiss army knife is pretty unique character choice and I love it!
I don't know if this was your goal but I get a total Portal/Aperture Science vibe from your game. The minimalistic 2.5D visuals work pretty well and I like that you added audio visual feedback to your character like the facial expression or the effects when jumping. It makes moving around the character feel good. Maybe check out this nice little Unity plugin "Feel". It could help you make the game feel even more responsive.
The color coding was also pretty helpful. Red means I can interact with it and it really stands out compared to the darker parts of level.
I liked the puzzle, like "Human verification puzzle", but I had a bit of trouble with the last one. I don't know what the correct way to solve it is but I managed to do it by somehow unfolding the knife while standing between two pillars which gave me a huge physics boost and helped me jump over the obstacle. This was nice because it made me feel like I outsmarted the puzzle. I also got the achievement when trying to break the game :D
With a proper swiss knife character and some polishing and of course more puzzle I could totally see this as a proper game.
Overall a pretty interesting take on the theme that works really well. Great job!