Control respawning enemies:To unlock the ability to toggle respawning enemies in certain districts on or off, complete the game by eliminating the Los Muertos Volk and Shai-Gen gangs.Driving level bonuses:You will receive the following bonuses when you reach level 4 with the Agency Supercar, Agency SUV, and Agency Truck Cab. You must upgrade you experience to four stars and 99 in order to use the bonuses:The Agency Supercar