I got as far as here and then couldn't get any further. Unsure of what I was missing. Tried to back track but wasn't able to make it.
There were some excellent puzzles up to that point. Some nicely frustrating and well thought out.
Checkpoints could have been a little more numerous.
The blue reset switches that were also next to the charge +1 jump were sometimes fiddly.
Movement was a little slow but I could see some of the puzzles being really hard if movement was faster. I some areas it got really slow.
The temporary save point didn't always work but never broke anything. Maybe there is a check for closeness or ability to get to full jump count or something.
Overall this is really good stuff. I played Project Deepdark and this is so much more sophisticated and polished. Best of luck with the jam and I look forward to your next release!
Edit: Ok..managed to back track and got some kind of power up. I think it might have activated some blocks or something? Never got whatever was in the far left. Got down to the basement and couldn't make it past the switch platforms.