Wall glitch
Things you need to do the glitch:
The decoy glove (go on planet barlow and buy it)
Now, go on any planet with walls (i suggest planet tobora) but go on any planet then stand right next to the wall (as close as possible) and face the part with no wall. Now time for your decoy glove. press and hold L1 and aim on your left as close as spossible then same thing to the right then to the middle (but leave some space) then the screen should rapidly shake. Thats good now put a decoy behind the one in the middle. Now, you might be inside the wall or through the wall. And explore the wall or just see whats behind it.