Half-Life 2: Applied Force

As Gordon Freeman launches his attack on the Combine Citadel in City 17, another scientist in another HEV suit wages his own war in the streets. Dr. Harold Liberty is an old man, and former Black Mesa Scientist. He has been a thorn in the side of the Combine since their occupation, and now he has a chance to level at them a heavy blow. His HEV suit nullifies the decay of age, and on the battlefield he is an unstoppable force of vengance. With his resistance cell gathered behind him, he must storm the streets of City 17 and knock down the Combine's 37th Overwatch Infantry Division. Tying down such resources will stop the Combine from reinforcing the Citadel. But the Combine are holding nothing back; keep your eyes in the sky, doctor.