Enter the mind of Filip Valkas, who lost his parents in the Seven Hour War, and take your revenge on your Combine captors in a new story centred on the Half-Life Universe. Pick up your own crowbar and force your way out of Citizen Containment Zone 19, and lead in the uprising against the alien agressors.
I don't think the grubs leave the tunnels.
I can't say it looks very antlion infested. :S
you ought to break up the top of the canals some more, especially do it over those concrete sections that are overhead. and more concrete debris laying about perhaps. and some dead antlions, or antlions fighting each other for no reason lol.
I love the map, but I don't think antlion worm will stay there. They don't stay outside.