Yes, the scene in the screenshot is where I got stuck. After coming back to it again, I did figure out how to get past it. Still, it’s very unclear and requires more precise movements.
After progressing a little further, I managed to soft lock myself. While sliding down a wall, ice cubes regenerated on top of me and trapped me. I could melt one, but not both. A reset key could be another thing you add for this reason.
As for the controls, I may just be used to control schemes closer to WSAD. Arrow keys to move and Z to jump felt weird, but I did get used to it.