HCF_Killbox
Complete "HCF_Killbox" arena.
HCF_Dungeon
Complete "HCF_Dungeon" arena.
HCF_Labmoar
Complete "HCF_Labmoar" arena.
HCF_Range
Complete "HCF_Range" arena.
HCF_Factory
Complete "HCF_Factory" arena.
HCF_Temple
Complete "HCF_Temple" arena.
Veteran
Win 50 matches.
Terminator
Exterminate 1500 generic headcrabs.
Assassin
Exterminate 2000 fast headcrabs.
Fireman
Exterminate 2500 fire headcrabs.
Melter
Exterminate 3000 ice headcrabs.
Antidote
Exterminate 3500 poison headcrabs.
Insulator
Exterminate 4000 electric headcrabs.
Exorcist
Exterminate 4500 ethereal headcrabs.
Psycho
Exterminate 5000 hallucinogenic headcrabs.
Sniper
Shoot 500 headcrabs using firearms.
Nice Catcher
Perform 250 nice catches.
Artistic Confusion
Cause some disorder in the Museum.
Jinxed
Miss 1000 times.
Headcrab Frenzy!
Spend 60 minutes in Frenzy mode.
Survivor
Regenerate 100,000 health points.
High Score!
Score 1,000,000 points in a single match.
Beyond Godlike
Perform a 25x combo.
Ladder Completed
Survive all 8 "Ladder" waves.
Ladder Master
Survive 20 waves in "Ladder" game mode.
Random Master
Survive 20 waves in "Random" game mode.
Nimble on Feet
Don't be bitten at all during a single wave.
Headcrab Expert
Beat the game on "Easy" skill level.
Headcrab Connoisseur
Beat the game on "Medium" skill level.
Headcrab God
Beat the game on "Hard" skill level.