Headcrab Frenzy!
achievement guide & roadmap
HCF_Range
HCF_Killbox
HCF_Dungeon
HCF_Labmoar
HCF_Factory
HCF_Temple
Veteran
Terminator
Assassin
Fireman
Melter
Antidote
Insulator
Exorcist
Psycho
Sniper
Nice Catcher
Artistic Confusion
Jinxed
Headcrab Frenzy!
Survivor
High Score!
Beyond Godlike
Ladder Completed
Ladder Master
Random Master
Nimble on Feet
Headcrab Expert
Headcrab Connoisseur
Headcrab God