Though you some of you can't decide which side to be on, good or evil play good first then play again but be evil. Since a free real game, you can play as long as you want without finishing the game, when climbing, it is difficult because of every thing there is. Plus when enemies are shooting at you , it is difficult to climb. With the long story , plus the dead drops and the electrical shards, I'd say near 10 hours to finish the game. If you have a PS3,then you need to play this game