This game melted my brain - it was surprising to me how much more difficult a maze is when there are different levels.
Really good idea to give the player Hansel and Gretel style breadcrumbs to let them optionally mark the way. It would be cool if you got paid based on how many artefacts you pulled out of the maze to incentivise the player to hold on to things. It'd also be nice to let the player walk past an item without picking it up. A couple of times I placed an item and then accidentally picked it straight back up again although that was probably me just being clumsy/bad at games, haha.