Here I give some hints for you to discover several useful features which are hidden in the game!
How to make your escape easier.
This hint will teach you how to escape and how to overcome barriers. When you have low health level, you should escape from the area as quickly as it possible. Check whether you have the grappling hook So get out of that area and find a barrier (a wall, for instance). Use the hook to climb over the barrier. When you are on the other side, run away and press the G key to get the hook and to stop your enemies pursuit.
How to get a forklift.
In multiplayer mode, when you are on the Night Flight stage, find a flag south of you. There are some warehouses there, enter one of them and get your forklift!