Nice map one. It has a good flow and it's quite simple overall. Except maybe that drop surf part which newer players might not be able to accomplish as it takes me some time personally. I especially like the area switch that can be seen on your 8th screenshot. If you plan to release future updates consider making the surf part easier and fix the flickering vent texture :D. All in all good work Mr. one.
This is a great map, the gameplay is fun and the design and textures are great, but i did find a mistake with the displacements in the area after the dropdown and surf, i know its a little nitpicky but it triggered my ocd