The misaligned/offset mouse/reticle bug (where interacting with an object doesn't work when you are looking at it directly, and you have to have click on some arbitrary place next to it but not directly facing it for the interaction to actually register) was incredibly annoying, and the part where you're supposed to make acid in the bucket made so little sense that it literally took me two attempts at the game and like 15 full minutes of frustration to figure it out. Both of these things made me kind of hate this game, which is a shame because I really would have loved it otherwise.