After long time, I finally completed this part. If you haven't done it yet, play the other 3 part's in order before this one. This is a very large scene, not too large to run slowly, but you will take your time on compleding this part. Besides new content, this scene also fixed the bug of walljumping after hitting something at it's side. I hope you enjoy my game and complete it, because it has some hard moments.
*edit1: After several bugfixes and epileptic savety improvements I reuploaded the scene. The fixes include achivement spamming, invisible blocks in red room and similar things.
*edit2: Save pads have been activated, the script been found, my life been completed.
*edit3: Fixed some bugs including the unlock pads turning into achivement blocks and knocking the player away, and the red room not correctly turning the cube back to his basic form. I wonder why noone reported this