I did most of the level in one sitting, stopping after I got stuck on the second-to-last checkpoint for 2+ hours and I had to go to sleep. I decided against keeping my PC on overnight since it doesn't seem good for the PC. Immediately after waking up I booted up The Abyss, noclipped my way to the same checkpoint (that's why "used ignore damage" pops up), and kept going as before. In between these sessions, I did not practice the level at all. In my mind, what I did is essentially equivalent to keeping my PC on overnight—and if not that, it is at least equivalent to loading a saved checkpoint, which is a planned vanilla GD feature. Therefore, if/when checkpoint saving is added to vanilla GD, I feel justified to MegaHack the stats, but not before it's added since it isn't yet in the game. I understand if you don't see this as a legit completion, but I am happy with it.
Main channel: / aerma