Half-Life: Day One

Half-Life:Day One is the first demo of Half-Life.

Story
The story follows the original game,it just ends in the chapter We've Got Hostiles.

Weapons
crowbar MP5 shotgun fragmentation grenade

Allies
Black Mesa Science Team Black Mesa Security Force Black Mesa Engineering Team

Enemies
Black Mesa Security Force (if shot at) HECU Marines with an MP5 with an attached grenade launcher(replaced with an M14 carbine in Half-Life:Source) Xenian Zombie Barnacle Bullsquid Headcrab