Tomb Raider Underworld Cheats - Xbox 360

Bulletproof Lara
Hold [LT] and press [A], [RT], [Y], [RT], [X], [LB] during game play. A sound will confirm correct code entry.

Draw Enemy Health
Hold [LT] and press [X], [B], [A], [LB], [RT], [Y] during game play. A sound will confirm correct code entry.

One Shot Kill
Hold [LT] and press [Y], [A], [Y], [X], [LB], [B] during game play. A sound will confirm correct code entry.

Achievements
Complete each achievement to get the allotted gamerscore:

Climber (5) - Execute a chimney jump of at least 2 wall kicks.
Coastal Thailand Expedition (75) - Coastal Thailand Expedition successfully completed.
Dedicated Treasure Collector (50) - Find 100 Treasures.
Dedicated Relic Collector (50) - Find 3 Relics.
Grenadier (10) - Kill two enemies with one grenade.
Master Speed Demon (10) - Beat all three Speed Demon challenges.
Master Survivalist (100) - Complete the game on hardest possible settings.
Master Climber (10) - Execute a chimney jump of at least 4 wall kicks.
Master Swan Diver (10) - In one adventure, swan dive off the three highest points over water in the game.
Master Treasure Collector (60) - Find all 179 Treasures.
Master Grenadier (10) - Kill three enemies with one grenade.
Master Relic Collector (70) - Find all 6 Relics.
Master Roadkiller (10) - Kill five enemies by running over them with the motorcycle.
Mediterranean Sea Expedition (50) - Mediterranean Sea Expedition successfully completed.
Prologue (25) - Complete the Prologue.
Relic Collector (30) - Find a Relic.
Roadkiller (5) - Kill an enemy by running over it with the motorcycle.
Skilled Treasure Collector (40) - Find 50 Treasures.
Speed Demon I (5) - Drive into Xibalba in under 45 seconds.
Speed Demon II (5) - Drove from the top of Valgrind to the bottom in under 50 seconds.
Speed Demon III (5) - Drive through the Valhalla Maze in under 40 seconds.
Swan Diver I (10) - In one adventure, swan dive off one of the three highest points over water in the game.
Swan Diver II (10) - In one adventure, swan dive off two of the three highest points over water in the game.
Treasure Collector (30) - Find 10 Treasures.
Weapons Expert (5) - Execute an Adrenaline Attack headshot on an enemy.
Weapons Master (10) - Execute ten Adrenaline Attack headshots.

Additionally, there are seven secret achievements:

Mediterranean Sea Expedition (50) - Mediterranean Sea Expedition successfully completed.
Coastal Thailand Expedition (75) - Coastal Thailand Expedition successfully completed.
Croft Manor Expedition (25) - Croft manor Expedition successfully completed.
Southern Mexico Expedition (100) - Southern Mexico Expedition successfully completed.
Jan Mayen Island Expedition (50) - Jan Mayen Island Expedition successfully completed.
Andaman Sea Expedition (25) - Andaman Sea Expedition successfully completed.
Arctic Sea Expedition (100) - Arctic Sea Expedition successfully completed.

The following achievements require the "Beneath The Ashes" bonus downloadable content:

Beneath the Ashes (50) - Complete the Beneath the Ashes mission.
Collector (25) - Find the Beneath The Ashes Relic.
Master Collector (50) - Find the Beneath The Ashes Relic and all Treasures.

The following achievements require the "Lara's Shadow" bonus downloadable content:

Relic Hunter (10) - Find the Hidden Relic in LS.
Right of Passage (10) - Destrot the Transformer, and complete a timed speed run through the unstable passage without saving.
Refinery Speed Run (10) - Complete a timed speed run from the first slope in the Refinery to the back platform without saving.
Shadow Combat Master (10) - Complete the LS Combat Tutorial.
Treasure Hunter (10) - Find all Treasures in LS.
Master Reward Hunter (25) - Find all Treasures and the Relic in LS.
Lara's Shadow (50) - Complete Lara's Shadow.

Concept Art
Complete the indicated task to unlock the corresponding concept art at the "Extras" menu:

Environment Concept Art for Arctic Sea and Amelia Concepts - Complete Arctic Sea.
Environment Concept Art for Coastal Thailand and Alister Concepts - Complete Coastal Thailand.
Environment Concept Art for Croft Manor and Doppelganger Concepts - Complete Croft Manor.
Environment Concept Art for Med Sea and Amanda Concepts - Complete Mediterranean Sea.
Environment Concept Art for Mexico and All Men Concepts - Complete Southern Mexico.
Environment Concept Art for Ship and Natla Concepts - Complete Andaman Sea.
Environment Concept Art for Jan Mayen Island and Gear and Artifacts Concepts - Complete Jan Mayen Island.
Creature Concepts - Collect all treasures.
Game Flow Storyboards - Complete the game under the Master Survivalist difficulty setting.
Lara Concepts - Collect all six relics.
Zip and Winston Concepts - Complete the Prologue.

Unlock Lara's Bathing Suit
Complete the game on any dificulty setting and this becoms unlocked in treasure Hunt mode when you revisit the Mediterranean Sea Expedition.

Unlock Treasure Hunt Mode
Complete the game on any difficulty to unlock Treasure Hunt mode which allows you to revisit all levels to claim treasures/relics missed through storm.