http://breezewiki.bunny5exbgbp4sqe2h2rfq2brgrx3dhohdweonepzwfgumfyygb35wyd.onion/crosscode/wiki/Getting_Started
If there are a couple missing from the chest counter, they may be tied to quests in the area. Dungeons Dungeons in CrossCode are very puzzle-heavy, with a battle every 3-4 rooms to change things up. The puzzles generally start with a simple introduction to a new Puzzle Element , and then follow that with several more challenging puzzles which may involve tight timing.