Fantastic game with interesting mechanics. I really liked the system of artifacts allowing you to very well modulate difficulty. I also liked the 3 various extra challenges (I did them all) which gave fun experiences. I would offer a few pieces of suggestions should you ever make a game like this again.
1. The precision aim really could have used a better tutorial or some reminder later down. I never even used it straight at the beginning since it wasn't necessary and completely forgot it existed until I reached a very late level that couldn't be beaten without it and had quite a few frustrations wondering why 360 degree aim didn't exist.
2.While the puzzles are good they require quite a few steps, this becomes a problem for some of them where the puzzle is actually not the early parts, they are simply, but a later one that can be quite difficult, this involves a too tedious process of resetting the puzzle for every try so maybe keep that in mind.
3. While I appreciate the cinematic/story effect of the expanding orange circles they essentially work as a timer on each puzzle and that causes problems for accessibility. This is especially true for the puzzle game genre which is supposed to be accessible. On some of these the timings were quite tight. Maybe an artifact that adjusted that would have been a good idea or something in the settings.