Breach (GOG)

BREACH - A single-player tactical-level combat game.
Smooth animated movement and combat.
A campaign of several scenarios included with the game.
Up to 40 opponents per scenario – ranging from beasts to marines. Six different classes of opponents in all.
Equip your marines with 20 different objects – including rocket launchers, demolition charges and cracking units.
Build up your squad leader for special advanced training – all of his combat experience is saved!
Scenarios can have several different victory conditions which can be mixed together to form complex battles.