If you leave the critical strike training on and turbo mode is on then walk away you can get free experience and 10000's of critical points. I left it on before i went to work and now i have 15,000 critical points and leveled up 45 levels.
I wish there was a map or an objective. I got lost and found a Sheriffs car. Got in it and tried to drive but you can't see anything with the head lights. Then they turn off when you are driving for more than 2 seconds then you get stuck in the Ocean.