the first level of many classic 8bit and 16bit games are way above the village of RE4.
because the devs back then basically explained the whole game to you purely through leveldesign.
the first level in SMB placed blocks and enemies in a way that you have a high chance of accidentally learning all the mechanics.
the first level of MegaMan X teaches you every single game mechanic, including wall sliding, wall jumping, shooting and enemy weakpoints simply through leveldesign and enemy design.
or a more recent example that was heavily influenced by all these games is Shovel Knight and its DLCs, where once again, all game mechanics of the game are teached to you purely through leveldesign, even in the more complex character DLCs like Plague Knight's DLC