Command & Conquer: Red Alert 3 Cheats

If you want some special units to have some fun with in a regular battle, then just be the Allies! Here are the ways to get them:

Accomplish the indicated achievement to get the corresponding number of Gamerscore points:
The Shrike and the Thorn (10 points): Complete Soviet mission 1 on any difficulty level.
Circus of Treachery (10 points): Complete Soviet mission 2 on any difficulty level.
Taking Back Ice-Harbor (10 points): Complete Soviet mission 3 on any difficulty level.
March of the Red Army (10 points): Complete Soviet mission 4 on any difficulty level.
The Science of War (10 points): Complete Soviet mission 5 on any difficulty level.
No Traitors Tomorrow (20 points): Complete Soviet mission 6 on any difficulty level.
To Tame a Living God (20 points): Complete Soviet mission 7 on any difficulty level.
The Stone-Faced Witnesses (20 points): Complete Soviet mission 8 on any difficulty level.
Blight on the Big Apple (20 points): Complete Soviet mission 9 on any difficulty level.
Ride of the Red Menace (10 points): Complete Allies mission 1 on any difficulty level.
The Shark and the Lure (10 points): Complete Allies mission 2 on any difficulty level.
The Famous Liberation (10 points): Complete Allies mission 3 on any difficulty level.
Enemy of Our Enemy (10 points): Complete Allies mission 4 on any difficulty level.
The Unfathomable Fortress (10 points): Complete Allies mission 5 on any difficulty level.
A Monument to Madness (20 points): Complete Allies mission 6 on any difficulty level.
Forever Sets the Sun (20 points): Complete Allies mission 7 on any difficulty level.
The Great Bear Trap (20 points): Complete Allies mission 8 on any difficulty level.
The Moon Shall Never Have Them (20 points): Complete Allies mission 9 on any difficulty level.
The Death of Father Frost (10 points): Complete Empire of the Rising Sun mission 1 on any difficulty level.
To Conquer Shattered Spirits (10 points): Complete Empire of the Rising Sun mission 2 on any difficulty level.
Behold the Shogun's Executioner (10 points): Complete Empire of the Rising Sun mission 3 on any difficulty level.
Graveyard of a Foolish Fleet (10 points): Complete Empire of the Rising Sun mission 4 on any difficulty level.
Assault on the Black Tortoise (10 points): Complete Empire of the Rising Sun mission 5 on any difficulty level.
Rage of the Black Tortoise (20 points): Complete Empire of the Rising Sun mission 6 on any difficulty level.
Barbarians at the Bay (20 points): Complete Empire of the Rising Sun mission 7 on any difficulty level.
Crumble, Kremlin,...