Holy shit there's a quick save feature.
Alright this isn't a bug, per say, but a feature of the engine that I did not implement in Katja's Abyss. Saving during levels was a feature I was unable to complete before release of the game, and this is why no in-game official save button exists. Instead, progress is saved automatically upon completing a level. Saving the state of each tile and unit in the level without access to arrays ran the risk of hitting hard limitations on data storage in save files. Attempts to circumvent these limits by bitmasking became quickly out of scope for what I could accomplish on my own.
Due to new engine features it may be more feasible to add mid-level saving and loading, but I can make no promise that I will be able to return to the code and implement this feature. The workarounds used to make the game function might prove too difficult to untangle in order to add new features properly.