Half-Life Base Defense v.1.705p

Description
It's a modification for Half-Life based on horde-style and RPG systems. You need to choose your class, then join the fight against most dangerous aliens which are hunting you. There are 3 player classes in the game. Every class has it's own abilities and traits. You can be killing machine, strong support for your teammates or become the golden mean between those roles. In game you can get different items from the strongest monsters: helmets, armor and trinkets with magic powers. As you kill monsters you will get experience points and level ups. Make your own epic character build and experience the most challenging battles!
This mod offers an installer.