What about ghosts?
Bullets work on everything.
Also isn't it kinda unfair to single headcrabs from the entire alien race? Headcrabs themself aren't a race, you're arguing it against other entire races essentially. I think
yeah headcrabs are a racewhat else would they be
They are part of a huge alien race
A race of equally-ineffective bullet-vulnerable wimps. They are still the weakest race of the bunch by far.
2wimpy4me
[im g width=5 00]http://cloud-4.steampowered.com/ugc/597005871361548990/141E409EB9B0CFEDB8A2CCF335BDD31C0916CAED/[/img]2wimpy4me
those are antlions and are distinctly a different species
Xen/Race-X
Xen and Race X are also entirely different species.
Pretty sure in the end they are all part of the Xen/Race-X
they all live on xen but they are not of the same race, seeing as how they all fight each otherin fact, during sandtraps antlions will attack headcrabs and zombies