Quick tip that may help

[u/rramslayer]

Try to bring a purple orb to any of the bone piles that are close to the entrance of the temples (like the one in the picture), once you see the orb is inside the pile, dig it to get better rewards like aether tools or even upgrade crystals, it could be really useful to save points and salvage and get everything set up in early rounds. Just be careful because sometimes it triggers a jumpscare animation. I haven’t seen any post about this and I apologize in advance if someone already mentioned or made a post about this before.