Prey - Platform: XBox 360

Casino Mode:
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Successfully complete the game to unlock Casino mode. Select "New Game" 
and "Casino mode" will be above Normal mode. Casino mode allows you to 
play the casino games in Jen's Bar.

Cherokee mode:
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Successfully complete the game on the Normal difficulty setting to unlock 
the Cherokee difficulty setting.


Concept art galleries:
---------------------- 
Successfully complete the game on the Normal difficulty setting to unlock
the first gallery. Successfully complete the game on the Cherokee difficulty
setting to unlock the second gallery.


Achievements:
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Complete the following achievements to unlock the indicated number of Xbox 
Live Gamerscore points.

LAST CALL
Last call complete 10 points

ESCAPE VELOCITY
Escape velocity completed 10 points

DOWNWARD SPIRAL
Downward Spiral completed 10 points

RITES OF PASSAGE
Rites of passage completed 10 points

SECOND CHANCES
Second chances completed 15 points

ALL FALL DOWN
All fall down completed 15 points

CRASH LANDING
Crash landing completed 15 points

SACRIFICES
Sacrifices completed 20 points

THERE ARE OTHERS
There are others completed 20 points

GUIDING FIRES
Guiding fires completed 20 points

THE OLD TRIBES
The old tribes completed 25 points

HIDDEN AGENDA
Hidden agenda completed 25 points

JEN
Jen completed 25 points

THE DARK HARVEST
The Dark harvester completed 30 points

FOLLOWING HER
Following her completed 30 points

THE COMPLEX
The complex completed 30 points

ASCENT
Ascent completed 40 points

CENTER OF GRAVITY
Center of gravity completed 40 points

RESOLUTIONS
Resolutions completed 40 points

OATH OF VENGEANCE
Oath of vengeance completed 50 points

FACING THE ENEMY
Facing the enemy completed 50 points

MOTHER'S EMBRACE
Mother's embrace finished 60 points

Saviour: (65 Points)
Completed game on Normal difficulty

Galactic Hero: (65 Points)
Completed game on Cherokee difficulty

Young Blood: (10 Points)
Reached 50 kills total in death match

Brave Star: (15 Points)
Reached 125 kills total in death match

Ultimate Warrior: (50 Points)
Reached 500 kills total in death match

Team member: (10 Points)
Reached 50 kills total in team death match

Team player: (15 Points)
Reached 125 kills total in team death match

Team leader: (20 Points)
Reached 250 kills total in team death match

Sharpshooter: (10 Points)
Reached 25 Sniper kills in death match and team death match

Invisible assassin: (10 Points)
Reached 25 kills in death match and team death match using spirit form

Mechanic: (10 Points)
Reached 25 kills in death match and team death match using the wrench

Rifle Ranger: (10 Points)
Reached 25 kills in death match and team death match using the rifle

Crawler King: (10 Points)
Reached 25 kills in death match and team death match using Crawler grenades

Machine Gun Tommy: (10 Points)
Reached 25 kills in death match and team death match using the Auto-Cannon

Launcher Lord: (10 Points)
Reached 25 kills in death match and team death match using the Crawler Launcher

Soul Sucker: (10 Points)
Reached 25 kills in death match and team death match using the Leech Gun

Toxic Overlord: (10 Points)
Reached 25 kills in death match and team death match using the Acid Sprayer

Rank 1: (20 Points)
Win a ranked match

Ten Ranked Matches: (20 Points)
Play ten ranked matches