So, I seen this video on Youtube (God knows when) and you load up Editor and Thief (Some job from Martin), after you get the police on you, you kill them for about 5-10 minutes then call Lester or get them off of you somehow. After you complete, the mission, you get a shitload of RP and some money. I'm not a high enough level to do it and can't play the mission. If anyone knows this still works, I'll grind for the required level for Editor and Thief.