In Roulette Rivals you go heads up against another player in main missions. Once a mission is selected, an admin will spin the hitman roulette wheel (HITMAPS.com). The admin will give the roulette restrictions info to both players, and give the sign to officially start the match. Players are allowed to use every item and spawn location they want.
Whoever finishes the mission with a 5 star SA rating first in real time wins the map. This is NOT about the fastest time, but about who ever finishes the mission first with a 5 star SA rating. Do you play it safe? Takes longer, but you wouldn't have to restart. Or, do you play it risky to get that awesome time, with the potential of a lot of restarts?