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.

• 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

• 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

1. You need both Portal and Half-life 2 for starters. Install or re-install both games now.



2. Back up your Portal directory. Unless you changed the install path, the directory is in ...Steamsteamapps(your_username)portal. If you make a mistake during this hack, you may need to re-download Portal through Steam (or at worse, Half-life 2 through Steam).



3. Download and install GCFScape if you do not have it already. This program allows you to access the cached game files for games using the Source engine.



4. Head into the directory ...Steamsteamapps for all the available GCF archives available. Open the file half-life 2 content.gcf via GCFScape. Click the hl2 folder on the left pane of the GCFScape Explorer window. Right mouse click maps and select the command Extract to place all the contents of the maps folder into the directory ...Steamsteamappsthe_great_bundiniportalportal. This merges Half-life 2 maps with the Portal map folder.



5. Repeat the above step with the scenes folder via GCFScape.



6. Boot up Steam to run Portal. Drop the developer console with ‘~’ (you may need to enable it under your keyboard options or enable it via the -console command switch on the executable's shortcut).



7. On the developer console, type maps * to list all the available maps; this should inclde the Half-life 2 maps imported from the previous steps. Type map and then the name of that map (i.e., map d1_canals_01).



8. Once the map is loaded and you can play, drop the console and enable the cheats for Portal by entering sv_cheats 1. Give yourself all weapons (including the Portal Gun) by entering impulse 101. You may need to input upgrade_portalgun to enable you to fire both portals.



9. Enjoy the havoc. Note that this hack also works with Episode 1 and Episode 2. You will notice that while NPCs from Half-life cannot pass through portals, all other inert objects (including yourself) and weapons fire will pass through with no problems.