Generally you have to find the code to the lock, to open the cabinet, to get the key, to open another door .... A sequence of puzzles which unlock the next ste

Generally you have to find the code to the lock, to open the cabinet, to get the key, to open another door .... A sequence of puzzles which unlock the next step. Puzzles like the code lock may be numeric, you may find a clue to the code as a sequence of colors, which you have to find the color key for (maybe it is split into parts and hidden around the room). Sometimes it's as simple as finding a key. e.g. in the pocket of a coat hanging on the wall, or a note inserted into a book on a shelf. (Tearing the room apart to find objects is usually the best strategy!) Some puzzles get a bit more clever than this but these are usually the foundation elements.