Thanks! Yeah I was hoping for something more along the lines of the HoloCure survivor-like where you actually need to go around the map for upgrades. Balancing chest drop rates was tricky, they have a low chance to spawn, and a low chance again of actually having an item in them. They all respawn after beating the boss though, unless you haven't opened it yet. The map is randomly generated based on 8 template rooms, one of which being the altar which will spawn exactly once near one of the four edges of the map.