Can I speedrun this by myself in solo mode

Hi I was wondering how you glitch the blue keycard in outpost glitch%

The rules about abilities are confusing me :(

Hi, do you want to speedrun? If yes then type ur username and I will send friend request and also what chapter you wanna do. I can record. My user is the same on roblox as it is here.

can I change materials/textures in the game files to reduce lag or just to make it look cooler?