Very well made platformer. Loved the overall presentation, especially the octopus. If I had to hazard a guess, I'd say the head is a cube which is really the only thing that's animated, whereas the tentacles are physics joints ? None the less, it looked adorable and felt squishy in a good way. Also love the overall look of the level. It felt grungey in an industrial way, but not necessarily all that dirty or grimey. Definitely aided with the adorable tone of the game.
At first I thought having camera control would be a bit clunky for a 3D platformer, and my thoughts didn't really change since I died a few times because of it due to how my depth perception got a little screwed. However, I grew to appreciate having camera control the more I played. All I needed to do was aim a little differently during each part of the level. Some sections were more easier navigated when I tried a top-down view, some were more easily navigated when I went for a side view and so on. As the game went on, I liked the depth associated with needing to position the camera myself to ensure that my jumps were more precise.
The only thing that I'm not really a fan of is how some sections really required you to jump onto the yellow railings. That felt a bit awkward, especially with how thin the yellow railings were. Or maybe there was another way and I missed it, in which case I take this back, but if that was the intended solution for some of those cases, then I think maybe the railings could've been made slightly more wider.
But that aside, platforming felt fluid and fun. The variety of obstacles and platforming puzzles had the right amount of difficulty to them, and the way you kept upping the challenge with each one felt pretty well paced. All of this also helped ensure that even if I did die, there was only so much ground I had to cover again, but it was also engaging ground to cover again. That really helped the game remain fun even though you start from the beginning.
All in all, I'd say you made a really well polished and awesome entry here. Great stuff