The Half-Life 2: Episode One wiki last edited by clidus on 05/04/14 06:05AM View full history

Overview

Inside the Citadel

Half-Life 2: Episode One is the first episodic installment of

Valve's

Half-Life

franchise, and the second release in the

Half-Life 2

saga. Players once again fill the shoes of

Gordon Freeman

, and the action picks up not long after the finale of Half-Life 2. Miraculously plucked from the massive explosion of the Combine Dark Energy Reactor by

Vortigaunt

allies, Gordon and

Alyx Vance

are tasked with temporarily stabilizing the Combine Citadel's unstable energy core before it detonates and escaping from

City 17

before

The Citadel

explodes.

Story

Alyx frozen in time

Episode 1 begins immediately after the events of Half-Life 2. After the explosion of the reactor in the Citadel, Gordon Freeman is once again put into stasis by

G-Man

. Things don't go the G-Man's way after

Vortigaunts

appear to save Alyx and then take Gordon out of stasis. After regaining consciousness outside the Citadel, Gordon reunites with Alyx and

Dog

and, after talking to Drs

Isaac Kleiner

and

Eli Vance

, must re-enter the Citadel and slow down the explosion of the central core which would be catastrophic.

The unstable Citadel Core

Alyx and Gordon go back into the Citadel to stabilize the core and after several fire fights with the remaining Combine soldiers are successful in their cause. While still inside the Citadel, Alyx goes delving through the Combine's computer to uncover more information on their plans. She finds out that the Combine deliberately sped up the core meltdown so they are able to send a message back to Combine homeworld. She also finds a message by Judith Mossman describing a new discovery but is stopped after alerting the attention of

Combine Advisors

.

Alyx with an information screen featuring Isaac Kleiner behind her

Using the Citadel train system and having downloaded all the required information, Gordon and Alyx make a hasty escape from the Citadel. Unfortunately the train derails on the way to their destination and and the pair are forced to walk the rest of the journey. Whilst in City 17's underground rail network the duo are faced with many enemies including the

Zombine

, a cross between the normal headcrab zombies and Combine soldiers. Eventually the pair reach the surface and continue their trek to meet up with Eli and the others. Along the way they see that the screens previously used by

Wallace Breen

as a means of propaganda have been taken over by Dr Isaac Kleiner, who is now urging all citizens to evacuate the city before the cataclysmic Citadel explosion. Gordon and Alyx meet up with their good friend

Barney Calhoun

who, along with other survivors, are planning to escape City 17 via train. At this point the pair split up to provide a distraction for the people fleeing.

An advisor flees in a pod from the Citadel

After completing their objective Gordon and Alyx hastily make there way to the train station to escape the city. The two meet up with Barney again but must help hold off incoming Combine soldier and a

Strider

. When everyone else has left board a train themselves and programme it to take them out of the city. Whilst the train carries the duo away, in the background the Citadel can still be seen. The Combines message is sent as the core explodes but before this happens several pods can be seen leaving the structure, these pods are the same as the ones seen before carrying Combine Advisors. As the Citadel explodes the force of the explosion can be seen racing towards Gordon and Alyx, the screen fades to white and the game ends.

Gameplay

Gameplay is nearly identical to Half-life 2, with the addition of some new features; The first feature this game introduces is the

HDR

graphical technology, which was previously showcased in the tech demo

Half-life 2: Lost Coast

.

A Zombine

If the player walks from a bright room to a dark one, or vice versa, they are temporarily blinded as their 'eyes' adjust.

The second feature is the focus on physics-based combat. For the first half of the game, players either have no weapon besides the

Gravity Gun

, or have very little ammo. Thus, use of the Gravity Gun becomes essential. The third feature is the advancement in

Alyx's

AI. For example, if the player shines their flashlight into Alyx's eyes, she will squint and hold up her arm; in the middle of combat with a zombie, she may kick it's

headcrab

off, or dodge its attacks.

The third feature is the

Zombine

, a new enemy. This Combine zombie is much faster than its regular counterpart (though it lacks the frightening alacrity of the fast zombie), and can take much more damage. The greatest danger it poses, however, is its tendency to pull out a live

grenade

and charge towards the player. The player can counter this strategy by grabbing the grenade with the Gravity Gun.

The fourth, and final feature, is the addition of

Antlion

burrows. These holes will send out an infinite supply of Antlions unless the player manages to cover it with a physics object, such as a car.

Weapons

To see a full list of weapons in Half-Life 2: Episode One, go to the

Half-Life 2

page.

Levels

The first expansion to Half-Life 2 features 5 new levels.

  • Undue Alarm
  • Direct Intervention
  • Lowlife
  • Urban Flight
  • Exit 17

Reception

While criticized for its lack of variety and short gameplay, Episode One was met with critical acclaim.

System Requirements

PC System Requirements

Minimum:

  • 1.7 GHz Processor
  • 512MB RAM
  • DirectX® 8.1 level Graphics Card (Requires support for SSE)
  • Windows® 7 (32/64-bit)/Vista/XP
  • Mouse
  • Keyboard
  • Internet Connection

Recommended:

  • Pentium 4 processor (3.0GHz, or better)
  • 1GB RAM
  • DirectX® 9 level Graphics Card
  • Windows® 7 (32/64-bit)/Vista/XP
  • Mouse
  • Keyboard
  • Internet Connection

Mac System Requirements

Minimum:

  • OS X version Leopard 10.5.8
  • Snow Leopard 10.6.3
  • 1GB RAM
  • NVIDIA GeForce 8 or higher, ATI X1600 or higher or Intel HD 3000 or higher
  • Mouse
  • Keyboard
  • Internet Connection

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