I got 100% for San Andreas and it wasn't easy at all. The hardest part of getting 100% was first of all completing the story without cheating and then doing the checkpoint challenges and race tournaments! Christ they're hard!!

I love the turf wars and burglaries and when you complete Pimping mode, the prostitutes pay YOU!! LMAO!!

Oysters were another hard task as well because you have to search under water for them, but they increase your sex appeal so it's all good