Half Life 1
This is the protagonist of the Half Life series.
Who is Gordon Freeman?
This is how much time HL:A takes place before HL2.
What is 5 years?
This is a flying synth that can drop rollermines, drop off soldiers, and deploy striders.
Who is Dog?
This cut monster would knock the player (or other friendly npc's) and kill them.
What is a "Mr. Friendly?"
These are soldiers sent by the Government to cover up the Black Mesa Incident.
What is the H.E.C.U.?
These are what Alyx wore on her hands to help her perform tasks for the Resistance.
What are the Gravity Gloves?
This is the Combine's base of operations on earth.
What is the Citadel or Pillar 17?
This is who built the Anti-Superportal rocket in HL2:E2.
Who is Dr. Arne Magnusson?
This biologically-based weapon would jump around and attack enemies, acting as a distraction for the player to kill their enemies.
What was the Grenade Frog?
This is where the aliens invading came from.
What is Xen?
This is HL:A's release date.
What is March 23rd 2020?
This is said to be the most powerful weapon in Half Life 2.
This is what controls Dr. Wallace Breen, Earth Administrator.
What is the combine advisor?
What is Spacebiker?
What is the Nihilanth?
This is who leads a Combine platoon.
What is an Ordinal?
This is the artificial intelligence controlling the combine on earth.
This monster causes Alyx to nearly die.
What is a combine Hunter?
What is the Hyperborea?
This is the Xen crystal sample that triggered the Black Mesa Incident.
What is GG-3883?
This is where the G-Man was trapped in by the Combine.
What is the Vault?
This is what happened to the citadel when its reactor melted down.
What is a Dark Energy Flare?
This is a train Alyx and Gordon attempt to escape City 17 on in HL2:E1.
What is a Razor Train?
This is the rival corporation of Black Mesa.
What is Aperture Laboratories?