Half-Life 2: The Orange Box - HalfLife 2 Restore health

Half-Life 2: Full ammunition:
Press Y, B, A, X, RB, Y, X, A, B, RB during game play.

Portal: Create box:
Press Down, B, A, B, Y, Down, B, A, B, Y during game play.

Portal: Fire energy ball:
Press Up, Y2, X2, A2, B2, Up during game play.

Portal: Fire rocket projectile:
Press Up, Y2, B2, A2, X2, Up during game play.

Portal: Portalgun ID 0
Press Up, Left, Down, Right, Up, Left, Down, Right, Y2 during game play.

Portal: Portalgun ID 1
Press Up, Left, Down, Right, Up, Left, Down, Right, X2 during game play.

Portal: Portalgun ID 2
Press Up, Left, Down, Right, Up, Left, Down, Right, A2 during game play.

Portal: Portalgun ID 3
Press Up, Left, Down, Right, Up, Left, Down, Right, B2 during game play.

Portal: Portal placement anywhere
Press Y, A, B, A, B, Y2, A, Left, Right during game play.

Portal: Upgrade Portalgun
Press X, B, LB, RB, Left, Right, LB, RB, LT, RT during game play.

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

Bone Breaker 5 points: Kill 30 enemies with thrown physics objects.

Deadly Harvest 5 points: Kill an enemy by planting a hopper mine.

Hack Attack 5 points: Kill five enemies with a Manhack.

Hot PotatOwned 10 points: Kill a Combine soldier with his own grenade.

Conservationist 5 points: Kill five enemies with the same energy ball.

Think Fast 10 points: Kill an Elite Soldier with his own energy ball.

Grave Robber 5 points: Steal a Zombine's grenade.

Zombie-que 5 points: Use flares to light 15 zombies on fire.

Malcontent 5 points: Escape the apartment block raid.

What cat? 5 points: Break the mini-teleporter in Kleiner's lab.

Trusty Hardware 5 points: Get the crowbar.

Barnacle Bowling 5 points: Kill five barnacles with one barrel.

Anchor's Aweigh 5 points: Get the airboat.

Heavy Weapons 5 points: Get the airboat's mounted gun.

Vorticough 13 points: Discover the hidden singing vortigaunt cave in chapter Water Hazard.

Revenge 10 points: Destroy the hunter-chopper in Half-Life 2.

Blast from the Past 10 points: Find the HEV Suit Charger faceplate in Eli's scrapyard.

Zero-Point Energy 5 points: Get the Gravity Gun in Black Mesa East.

Two Points 2 points: Use DOG's ball to make a basket in Eli's scrapyard.

Zombie Chopper 25 points: Play through Ravenholm using only the Gravity Gun.

OSHA Violation 5 points: Kill 3 enemies using the crane.

Targetted Advertising 5 points: Pin a soldier to the billboard in chapter Highway 17.

One Man Army 5 points: Destroy six gunships in Half-Life 2.

Keep Off the Sand 20 points: Cross the antlion beach in chapter Sandtraps without touching the sand.

Bug Hunt 10 points: Use the antlions to kill 50 enemies.

Flushed 5 points: Kill an enemy with a toilet.

Warden Freeman 10 points: Survive the second turret standoff in Nova Prospekt.

"Radiation Levels Detected" 5 points: Get through the toxic tunnel under City 17 in Half-Life 2.

Plaza Defender 10 points: Survive the generator plaza standoff in chapter Anticitizen One.

Counter-Sniper 5 points: Kill all of the snipers in City 17.

Fight the Power 10 points: Shut down the supression device by disabling its generators.

Giant Killer 10 points: Survive the rooftop strider battle in the ruins of City 17.

Lambda Locator 15 points: Find all lambda caches in Half-Life 2.

Watch Your Head 5 points: Make it to the bottom of the Citadel's main elevator shaft in one piece.

Containment 5 points: Contain the Citadel core.

Pacifist 10 points: Contain the Citadel core without killing any stalkers.

Car Crusher 5 points: Use the cars to squash 15 antlions in Episode One.

Elevator Action 10 points: Survive long enough to get on the parking garage elevator.

Live Bait 10 points: Help Alyx snipe 30 enemies in Episode One.

Attica 5 points: Destroy the gunship in the hospital attic.

Citizen Escort 15 points: Don't let any citizens die when escorting them to the escape train.

Escape From City 17 20 points: Escape City 17 with Alyx.

The One Free Bullet 40 points: Beat Episode One firing exactly one bullet. Grenade, crowbar, rocket, and Gravgun kills are okay.

Acid Reflex 5 points: Kill an acid antlion worker.

Get Some Grub 20 points: Squish every antlion grub in Episode Two.

Pinata Party 5 points: Find and break every web cache in Episode Two.

Into the Breach 5 points: Help Griggs and Sheckley hold off the antlion invasion inside the mine shaft.

Hit and Run 5 points: Run over 20 enemies with the car in Episode Two.

Puttin' On a Clinic 15 points: Defeat the chopper in Episode Two without any misses.

Cache Checker 10 points: Find every radar cache in chapter Under The Radar.

Gordon Propelled Rocket 5 points: Unlock the rocket launcher lambda cache in chapter Under The Radar.

Pedal to the Metal 5 points: Beat DOG in a race to the White Forest base.

Little Rocket Man 30 points: Send the garden gnome into space.

Neighborhood Watch 35 points: Save all buildings outside the missile silo from destruction.

Payback 10 points: Kill a Hunter with its own flechettes.

Lab Rat 5 points: Acquire the fully powered Aperture Science Handheld Portal Device.

Fratricide 5 points: Do whatever it takes to survive.

Partygoer 5 points: Make the correct party escort submission position decision.

Heartbreaker 10 points: Complete Portal.

Terminal Velocity 5 points: Fall 30,000 feet.

Long Jump 5 points: Jump 300 feet.

Cupcake 10 points: Beat two Portal advanced maps.

Fruitcake 20 points: Beat four Portal advanced maps.

Vanilla Crazy Cake 30 points: Beat all six Portal advanced maps.

Basic Science 10 points: Earn bronze medals on all Portal challenges.

Rocket Science 20 points: Earn silver medals on all Portal challenges.

Aperture Science 40 points: Earn gold medals on all Portal challenges.

Turret 5 points: Accumulate 10 turret kills with a single turret.

Nemesis 5 points: Get five revenge kills.

Hard to Kill 10 points: Get five kills in a row without dying.

Master of Disguise 15 points: Trick an opposing medic into healing you.

With Friends Like these.. 10 points: Play in a game with seven or more players from your friends list.

Dynasty 10 points: Win 20 games.

Hardcore 15 points: Accumulate 1000 total kills.

Powerhouse Offense 5 points: Win 2Fort with a shutout.

Lightning Offense 10 points: Win Well in 5 minutes or less.

Relentless Offense 20 points: Win Hydro without giving up a capture.

Impenetrable Defense 10 points: Successfully defend Dustbowl without giving up a capture.

Impossible Defense 30 points: Successfully defend Gravel Pit without giving up a capture.

Head of the Class 5 points: Play a complete round with every class.

World Traveler 5 points: Play a complete game on every map.

Team Doctor 5 points: Accumulate 25000 heal points as a Medic.

Flamethrower 5 points: Set five enemies on fire in 30 seconds.

Atomizer 10 points: Disintegrate 15 soldiers by throwing them into a Combine ball field.

Follow Freeman 10 points: Gain command of a squad of rebels in the uprising.

Grey Matter 5 points: Get 25 headshots as a Sniper.

Camera Shy 5 points: Detach security cameras from the walls.

Friendly Fire 5 points: Knock down a turret with another turret.

Additionally there are eleven secret achievements, ten of which are currently unknown.

Defiant Achievement 5 points: At the beginning of Half-Life 2 where the carbine cop asks you to pick up the can, pick it up and hit him with it.