Nice music, I enjoyed a lot the depth effect to know heights, but sometimes it was hard to understand what was a column. You could have fixed it with some lights and shadows effects to show what would be a column.
Some of the platforms were easy, and sometimes too hard. I did not enjoy that I lost the key when I died, or that I had to try over and over again to know what platform was moving, and starting from scratch. The trolling is intended, but can I please make it less painful to start from the beginning with no key? I did not understand how to get over these two lasers:
That said, for 7 days, very well done! The music is nice, and the idea of doing jumps with a 2D zoom is very cool! Kudos :)
EDIT: Added to my list of hidden jam gems :)