Prey

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

Complete the following achievements to unlock Xbox Live Gamerscore points.

Last Call (10 points): Last Call level completed.

Escape velocity (10 points): Escape Velocity level completed.

Downward Spiral (10 points): Downward Spiral level completed.

Rites of Passage (10 points): Rites Of Passage level completed.

Second Chances (15 points): Second Chances level completed.

All Fall Down (15 points): All Fall Down level completed.

Crash Landing (15 points): Crash Landing level completed.

Sacrifices (20 points): Sacrifices level completed.

There Are Others (20 points): There Are Others level completed.

Guiding Fires (20 points): Guiding Fires level completed.

The Old Tribes (25 points): The Old Tribes level completed.

Hidden Agenda (25 points): Hidden Agenda level completed.

Jen (25 points): Jen level completed.

The Dark Harvester (30 points): The Dark Harvester level completed.

Following Her (30 points): Following Her level completed.

The Complex (30 points): The Complex level completed.

Ascent (40 points): Ascent level completed.

Center of Gravity (40 points): Center Of Gravity level completed.

Resolutions (40 points): Resolutions level completed.

Oath of Vengeance (50 points): Oath Of Vengeance level completed.

Facing The Enemy (50 points): Facing The Enemy level completed.

Mother's Embrace (60 points): Mother's Embrace level finished.

Savior (65points): Complete the game under the normal difficulty.

Galactic Hero (65 points): Completed the game under the Cherokee difficulty.

Young Blood (10 points): Reach 50 kills total in death match.

Brave Star (15 points): Reach 125 kills total in death match.

Ultimate Warrior (50 points): Reach 500 kills total in death match.

Team member (10 points): Reach 50 kills total in team death match.

Team player (15 points): Reach 125 kills total in team death match.

Team leader (20 points): Reach 250 kills total in team death match.

Sharpshooter (10 points): Reach 25 sniper kills in death match and team death match.

Invisible assassin (10 points): Reach 25 kills in death match and team death match using spirit form.

Mechanic (10 points): Reach 25 kills in death match and team death match using the wrench.

Rifle Ranger (10 points): Reach 25 kills in death match and team death match using the rifle.

Crawler King (10 points): Reach 25 kills in death match and team death match using Crawler grenades.

Machine Gun Tommy (10 points): Reach 25 kills in death match and team death match using the Auto-Cannon.

Launcher Lord (10 points): Reach 25 kills in death match and team death match using the Crawler Launcher.

Soul Sucker (10 points): Reach 25 kills in death match and team death match using the Leech Gun.

Toxic Overlord (10 points): Reach 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.

Additionally, there are three secret achievements.

Poker Face (10 points): $250 won on Draw Poker.

Retro Gamer (10 points): Score over 15,000 on Runeman.

Black Jack (10 points): $250 won on Black Jack.

To unlock Cherokee Difficulty, simply complete Normal difficulty first.

Complete the needed difficulty to unlock a concept art gallery.

When you reach the Spatial Anomaly Corridors (hallways with all the mirrors on the walls), take the first left then the first right. Walk ahead until you reach a corner, where you must take a left. Walk ahead towards the wall. Look to your left to see a mirror. Walk towards the mirror. Crouch below the bars and approach the mirror. You will see what appears to be a face, made of two health pads for eyes, and a Mutant "slit" door. When you get close enough to the "face," it will say something to you.

If you complete the game's story mode, you will receive a Prey Xbox 360 dashboard theme.