Achievements just didn't work at all
3-11 ~ Spiky: you can't throw the magnet while on a drill
3-14 ~ Too Slow: if you throw the magnet into the top-left corner while riding the block, you can get it weirdly like diagonally stuck
4-7 ~ Weight and Pull-me: I didn't use the one-way platforms on the right (also I kind of wish the exit required the magnet for this puzzle, since it's basically required anyway and it'd feel more satisfying)
4-12 ~ Gateway: after solving the puzzle, if you walk into the nook between the right wall and the block, you die
5-4 ~ Spring Buddies: I spent forever trying to figure out how the physics works if you're holding a magnet that's stacked on another magnet, before realizing it's not part of the solution
5-6 ~ The Last Leg: if you restart in the middle of the puzzle, you go all the way back to the beginning, meaning you have to redo the parts you've already done

I may have missed some, if you want you can watch my entire playthrough on twitch https://www.twitch.tv/videos/2306774343 but beware it's over 5 hours long (no idea why it took me that long)