| Hint | Answer | % Correct |
|---|---|---|
| Jump on your Head | Headcrab | 100%
|
| People or Scientists overtaken by Headcrabs | Zombie | 96%
|
| Main Enemy of Half-Life 2 | Combine Soldiers | 92%
|
| Creature that burrows under the ground, Don't Touch the Sand | Antlion | 89%
|
| Shoots Green Lightning, Enemy in HL1, Friendly in HL2 | Vortigaunt | 87%
|
| Zombie Combine Soldier | Zombine | 85%
|
| Attaches to Ceilings and grabs you with long tongue | Barnacle | 71%
|
| Common enemy of Episode 2, Escort the Striders | Hunter | 67%
|
| Combine Synth faced in the field of Episode 2 | Strider | 67%
|
| Comes in Packs, Dog like Xen creature | Houndeye | 61%
|
| Bigger Boss of the Antlion | Antlion Guard | 58%
|
| Combine Flying Synth, Can Deflect Rockets | Gunship | 57%
|
| Supreme Commander/Leader of Xen, Final boss of Half-Life | Nihilanth | 57%
|
| Fires Acid Ball from his mouth, hits with his tail | Bullsquid | 53%
|
| Citizens of City 17 Rebel and turn into this Laser Shooting Creature | Stalker | 48%
|
| Scans City 17 identifying citizens and taking photos to give away position | Combine Scanner | 47%
|
| Small Fish like creature, exists in real life | Leech | 46%
|
| Becomes Invisible on Hard mode, has silenced pistol and jumps very fast | Female Assassin | 43%
|
| Soldier of Xen, made in the Factory levels | Alien Grunt | 39%
|
| Shoots Fire out of his Hands | Gargantua | 38%
|
| Enemy of Chapter "Blast Pit" and in "Interloper" | Tentacle | 37%
|
| Weapon, chase you down and explode | Snark | 33%
|
| Huge man eating Fish | Ichthyosaur | 31%
|
| Mutated Zombie in Opposing Force | Gonome | 25%
|
| Enemy of Opposing Force that Shoots from a bug type creature that you can pick up | Shock Trooper | 23%
|
| Shoots Spikes in Opposing Force | Pit Drone | 22%
|
| Terraforms world for the Race-X in Opposing Force | Gene Worm | 20%
|
| Enemy of Opposing force in the infamous Sewer scene | Voltigore | 15%
|