In the finished Half-Life 2, there's a section where Gordon and Alyx are fighting through City 17 trying to reach Barney, and come to a destroyed bridge. You end up dropping down to the canal before a ...

Deadlock was supposedly once set in the Half-Life universe under the codename Citadel. So it's possible the antlions are more than mere placeholders, and we're seeing a glimpse of what Deadlock ...