Command & Conquer: Red Alert 3: Uprising/New Soviet Units

Desolator
Armed with a toxin weapon lethal to infantry. Its special ability is to fire a Splattershot that clogs up vehicle parts and makes them vulnerable to the Desolator's toxic spray. Was deployed to support Conscripts in taking out Peacekeepers and Imperial Warriors

Mortar Cycle
A Fast moving unit that's special ability fires devastating shots of Molotov Cocktails and speed that outruns even the Multigunner IFV.

Reaper
Like Twinblades this 4 legged Walker is well armed to the teeth. It can take out aircraft, infantry and even use its special ability to crush tanks. Once it uses its special ability it turns into a defense turret permanently which is effective on repelling most attacks.

This thing is useful when escorting Apocalypse Tanks against enemy aircraft and infantry.

Grinder
A large Tank that grinds up anything and has tough armor. Its special ability is to speed up, catch up to faster enemies and grind their foes faster. It is also amphibious.

Weaknesses

The only weakness for this tank is that it cannot target aircraft and it turns very slow so faster foes can evade being grinded up by its grinders.