The final version of Headcrab Mod 1.1.0 is out. Many bugs and problems have been fixed since the beta and a configuration file have been added. You can now edit the headcrab's, boss headcrab's, zombine's and combine's health and speed and even the gravity ! You can also choose of many headcrabs can fight in the same time, enable or disable the Zombine and even allow player to have infinite ammo.
Hope you will enjoy it !