Baxter calls himself "The Master of Unlocking", a reference to Jill Valentine, one of the original protagonist from the first Resident Evil game.
As adult Jade finds herself trapped in a storage room at the German prison, the camera pans over to see an old typewriter sitting on a nearby desk. Typewriters were used in the original Resident Evil video games as a method of saving one's progress.
The Wilhelm scream is heard at 26:32 during the prison break scene.