Mr. Gordon Freeman, long time no see. As you'll soon find out, the Resistance is still resisting. The Combine are still oppressing. And luckily for you, your gravity gun is still kicking.

It's time to tackle another Half-Life adventure filled with monstrous baddies and confounding puzzles. Kick start your episodic adventure the right way and tear through Half-Life 2: Episode One's challenges. Whether you've seemed to reach a dead-end or need tips for conquering the game's grueling boss fights, our guide has what you need to complete Episode One.

In this Half-Life 2: Episode One strategy guide, you'll find:

• Basic tips and strategy for Half-Life newcomers.
• Complete Half-Life 2: Episode One walkthrough with solutions for every puzzle.
• Boss fight tips and tricks for getting through the toughest battles.
• IGN Insiders get exclusive access to PDF and PSP downloadable guides, as well as a video walkthrough of the final confrontation.

Get the Half-Life 2: Episode One Online Strategy Guide

Bring DOWN the console and enter “sv_cheats 1”.

• No damage: god
• Never Die: buddha
• Infinite power for your suit: infinite_aux_power or sv_infinite_aux_power (Outbreak)
• All weapons and ammo: impulse 101
• Kill all npc’s in the area: npc_kill
• Enemies don’t attack: notarget
• Walk through walls: noclip
• Spawn a scout car: ch_createjeep
• Spawn an airboat: ch_createairboat
• Spawn an airboat: impulse 83
• skulls: impulse 102

Bring DOWN the console and enter “sv_cheats 1”.

• cl_drawhud: removed
• Wire frame models: mat_wireframe1
• Only objects effected by physics are wireframe: vcollide_wireframe 1
• Draw game triggers: showtriggers_toggle
• Draw normal maps: mat_normalmaps 1
• Draw surface materials: mat_normals 1
• Turn off bump mapping: mat_fastnobump 0
• impulse 200: removes weapon model from the screen