well/10 would drown in a hole again.
I like the concept and core game loop. The premise is simple and to the point, and the player gets straight into what they need to do basically immediately. It's very well done!
As with others comments, I think having more affordances to the viewer is important. I particularly found it hard to judge how far my hands could reach (often way further than I would expect).
Personally, I'm a bit torn on the water, since when I'm playing well the water didn't really stress me out since you can climb so much faster than it, and I'm already on the clock with the grip time on my hands. I do wonder how it would feel if leaned towards a getting-over-it styled genre, where there isn't really a punishment for falling, other than the fall itself.
Congrats on submitting!