A "cozy-dark" co-op about crypt exploration is being prepared by the developers of Valheim — Begraved

🟠You can play both solo and in co-op with up to 5 people;
🟠You are tomb raiders doomed to wander dark dungeons to pay off a debt;
🟠Inside are traps, enemies, and ancient curses — bring gear to survive;
🟠Loot taken from raids can be spent on base building;
🟠There is a proximity chat.

You can already apply for the playtest, and the release is early next year: store.steampowered.com/app/4113160