Adding it for payday 2, I used to have a Lua hook for pd2 but it stopped being supported.
The hacks that I can remember off my head were
*Movespeed changer (making you move faster or slower)
*Teleportation
*XP modifier (x2 x4 x6 x8 x10 x20 x50 x100)
*undetectable by AI
*Jump hight
About those I remember. It’s good to add that they did work in online, maybe try to find some part where they only work in private matches?