very good, sometimes the grapple worked in unpredictable and frustrating ways. Sometimes I was falling at terminal velocity and what looked like a grab onto a ledge to save me would just bounce and I would end up dying from fall damage. I think if there was a more discernable way to understand when your hook is going to grab and when it isn't would help a ton, as making my way down the first kiln with those horizontal tendrils would sometimes just slip me off of the ledge when the slope was too steep.
It could just be me, but the first room of the first kiln was very unforgiving, all to the point of me just fucking around with the hook until I accidentally stumbled upon a skip that completely trivializes the first room, and sometimes if you're lucky, the first half of the second.
After this first room though, all the other ones after have welcomed difficulty scaling and tension including the worm spawns against the perilous and confusing terrain to fall down from.
I am willing to divulge this secret and share the skip with others in the hope it somehow doesn't get patched or the layout changes slightly to account for this, as otherwise I wouldn't have even attempted to complete the first kiln at all.
First Kiln Skip Explanation
On a respawned run after you have died in the first kiln, the game puts you on a ledge just far enough away to barely attach your hook to the edge of the cliff. Upon moving only forwards a tiny bit, throw your hook so it does end up falling off the cliff. While keeping your hook thrown, proceed to walk only a few inches from the edge of the rock, and slightly tap w until you end up taking a leap of faith down. Keeping your hook thrown, don't move in the air while falling, and you eventually will reach and pass through the hole at the end of the first room. More often than not, your dangling hook that has now passed you by in velocity will end up grabbing the edge of the first hole, sometimes only taking some damage, sometimes none, successfully bypassing the entire first room by sheer bravery.
I'm not quite sure how the other setup works, but sometimes when performing this skip I would end up missing the first room's hole entirely, but somehow get saved by the rocks in the middle of the second room, completely skipping the first bit of the second room of the first kiln.