You will receive a code to unlock the following items after you complete Bionic Commando: Rearmed and the corresponding tasks:
ITEM - HOW TO UNLOCK
Prototype Weapon - In Bionic Commando: Rearmed, find the floating FSA icon in Area A located behind an electrical barrier you must go back to after removing.
Purple Matrix - In Bionic Commando: Rearmed, go to Area 0. After collecting all 12 Yashichis, enter the Yashichi door and collect the "Purple Matrix" inside.
Retro Costume - Download Bionic Commando: Rearmed.
To unlock the Retro costume, complete the game.
Unlock the following upgrades by performing the corresponding tasks:
UPGRADE - HOW TO UNLOCK
Ammunition Upgrade 1 - Kill a grunt with a grenade.
Ammunition Upgrade 2 - Kill an enemy with a death from above.
Faster Reload 1 - Defeat a Biomech to increase reload rate of the Yelena.
Faster Reload 2 - Kill 15 grunts in the air using the kite ability to increase the reload rate of the Yelena.
Firestorm - Kill three Grunts with a bulldog shot to increase the blast radius for the bulldog.
Hip Shot - Kill 10 frunts to increase shot accuracy for tungsten.
Hollow Point - Destroy a Polycraft to increase tungsten damage.
In Your Face - Kill two grunts with a single hiker shot to increase the rate of fire on the hiker.
Light Armor - Kill a grunt in hand-to-hand combat to increase how much damage you can take.
No Clipping - Defeat the Mohole to increase ammo capacity for the SJMG.
Precision - Shoot an enemy while zoomed in with the pistol to decreases the bullet spread while zoomed-in with the tungsten.
Red Matrix - Defeat the mohole to allow red matrix doors to be opened.
Reloaded - Kill two grunts with the bulldog while swinging to decrease the bulldog reload time.
Six Shooter - Destroy the buraq. The tarantula can lock on to six targets at the same time.
Sledgehammer - Kill three grunts with the hiker while swinging to increase hiker damage.
Super Charges - Kill a grunt with a whip spin attack to increase tungsten damage.
The Bullet Hoser - Kill three biomechs in hand-to-hand combat to increase the rate of fire for the SJMG.
White Matrix - Defeat the Constructor to enable opening of White Matrix doors.
Complete the following challenges by performing the corresponding tasks:
CHALLENGE - HOW TO UNLOCK
Arm and Wire Action: Leap Up! - Perform a leap up.
Arm and Wire Action: First Swing - Perform a swing.
Arm and Wire Action: Hand-To-Hand - Kill a grunt in hand-to-hand combat.
Arm and Wire Action: Kick In The Back - Perform two zip kicks.
Arm and Wire Action: Reel In - Reel in three times.
Arm and Wire Action: Speed Swinger - Perform five speed swings in a row.
Arm and Wire Action: Swinger - Perform three consecutive swings in a row.
Arm and Wire Action: Train Block - Pull down the vehicle that is blocking your path.
Arm and Wire Action: Train Wreck - Pull down three train cars.
Enemy Combat: Blood Trial - Kill 10 grunts.
Enemy Combat: Headshot Bonanza - Kill 50 grunts with a headshot.
Enemy Combat: Nemesis - Kill 350 grunts.
Enemy Combat: Slayer - Kill 25 grunts.
Weapon Usage: Close up - Shoot an enemy while zoomed in.
Weapon Usage: Kaboom - Kill a grunt using a grenade.
Weapon Usage: Two Hit Wonder - Kill two guards with a one hiker shot.
After completing the game and after the credits, a screen will with red morse code will appear. It translates to "CONSENT. IMPLEMENTATION OF PHASE TWO PREPARED. ACTIVATE PROJECT ALBATROSS.".
Resident Evil 5 easter egg:
Around the start of the game, after you exit through the big hole in the side of the building, there is a Tricell billboard; a reference to Resident Evil 5.
The Purple Matrix hint:
The Purple Matrix, found in Bionic Commando: Rearmed, is a key that opens a door in the Fissure I area of Bionic Commando. Look for the Purple Matrix Door (it glows purple) while swinging through the cave--it's somewhere on the left. Inside you'll find some old school Bionic Commando music blaring out of a radio and a comfy chair, as well as some sort of museum exhibit of what appear to be spider robots.
Air to Surface - Complete "air to surface" challenge.
Barrage - Complete "barrage" challenge.
Biomech Sweeper - Complete "biomech sweeper" challenge.
Blood Trial - Complete "blood trial" challenge.
Can you dig it? - Complete "can you dig it?" challenge.
Close Up - Complete "close up" challenge.
Come Out and Play - Complete "come out and play" challenge.
Cracker - Complete "cracker" challenge.
Crowd Control - Complete "crowd control" challenge.
Down To Earth - Complete "down to earth" challenge.
Drive-by - Complete "drive-by" challenge.
Explosive Delivery - Complete "explosive delivery" challenge.
Fair Fight! - Complete "fair fight!" challenge.
Feel the Beat, Y'all! - Complete "feel the beat, y'all!" challenge.
Headshot Bonanza - Complete "headshot bonanza" challenge.
Incoming! - Complete "incoming!" challenge.
Jabber Man - Complete "jabber man" challenge.
Kaboom - Complete "kaboom" challenge.
Kick In The Back - Complete "kick in the back" challenge.
Leap Up! - Complete "leap up!" challenge.
Let the Dog Out - Complete "let the dog out" challenge.
Man Locked Up - Complete "man locked up" challenge.
Nemesis - Complete "nemesis" challenge.
Out of the Bush - Complete "out of the bush" challenge.
Poly Cruncher - Complete "poly cruncher" challenge.
Pull! - Complete "pull!" challenge.
Receiving End - Complete "receiving end" challenge.
Rocket Man - Complete "rocket man" challenge.
Shellshock - Complete "shellshock" challenge.
Shoot 'Em Up! - Complete "shoot 'em up!" challenge.
Slayer - Complete "slayer" challenge.
Spence is in the Air - Complete "spence is in the air" challenge.
Stroke of Luck - Complete "stroke of luck" challenge.
Swinger - Complete "swinger" challenge.
The Pinball Effect - Complete "the pinball effect" challenge.
The River - Complete "the river" challenge.
Torn Into Pieces - Complete "torn into pieces" challenge.
Train Wreck - Complete "train wreck" challenge.
Two Hit Wonder - Complete "two hit wonder" challenge.
Whip 'Em Good - Complete "whip 'em good" challenge.
Whoo-paah! - Complete "whoo-paah!" challenge.
Worthy Foe - Complete "worthy foe" challenge.
I got Hard - Finish the game in hard mode.
The Collector - Find all collectibles in the game.
The Pitcher - Complete "the pitcher" challenge.
Choke on that - Kill Groeder; Kill him for good.
Bionically Challenged - Complete all challenges in the game.
End Game - Complete the final mission.
I went Commando - Finish the game in commando mode.
Go-Go Bionic! - Earn all Bronze, Silver, and Gold trophies.