Collectibles
Throughout the adventure you will find several relics. If you leave any, you can load the chapter where it is and obtain it, it will be counted at the next storage point.
Defeat the Guardians
To kill the guardians that you will find in the final part of the game, use the arch that you will find when killing the first of them. This weapon is much better against these creatures than usual weapons.
Easy money
In chapter 6 you will reach a roof with a pool. Enter and start a dialogue with Chloe about the Maco Polo game. You will get 10.000 dollars to buy extras.