Unlock PlayStation 3 trophy rewards, by completing the following tasks.

Trophy	How to unlock
Alone in the Dark (Bronze)	Beneath the arthropod.
Altitude is Attitude (Bronze)	Exploration off the ground.
Backtracking (Bronze)	Ride the crates.
Climbing the Cog (Bronze)	Don't pull the lever just because you can.
Going Up (Silver)	Don't let gravity keep you down.
Guided by Sparks (Bronze)	The crate is key.
It's Stuck (Bronze)	Prepare a dry landing.
No Point in Dying (Silver)	Complete the game in one sitting with five or less deaths.
Under Ground (Bronze)	Vertical passageway.
Urban Exploration (Bronze)	Involves heavy lifting.
Where Credit is Due (Silver)	Perseverance has its own reward.
Wrong Way (Bronze)	That's not right.