Removed the button connected to the cube dropper in the first room.

Replaced two flip panels with a fizzler in the second room.

Removed the cube button's connection to the pellet emitter in the second room.

Removed a trigger once item connected to the first light bridge in the third room.

Replaced four panels with one single panel in the forth room.

Removed the glass wall, laser relay, pedestal button and turret in the forth room.