These small rooms are all prefabricated puzzles and battles that get pieced together by a random dungeon generator. Because it is random I could not predict which direction players would approach each room from, so each room can be played and completed from any available entrance. Some prefabs use the same basic floorplan but have different elements in them to increase the variability in the random dungeons.
These prefabs were for an end game area called "The Core", it is the final mission of the main story arc. It is more difficult than previous levels in the game; due to the fact that enemies do not drop health, items, or loot and in some areas enemies are constanly spawning. "The Core" is an area deep within the planet Cradle where the terrain has not developed into recognizable features so it appears as plain white flooring.