Easy Money:
X, X, Square, Circle, Circle, Circle.

Instant Win:
Circle, Circle, Triangle, X, X, Square.

Invulnerability:
Square, X, Circle, X, Triangle, Triangle.

Nuclear Attack:
Circle, X, Circle, Circle, X, Square

Parabombs:
X, X, X, Circle, Triangle, Square.

Reveal Map:
Triangle, Triangle, X, Circle, Triangle, Square

Harvest people instead of ore:
Square, X, Square, X, Square, X.

Instant loss:
Circle, X, Circle, Square, Square, X.

Civilians have names:
Square, Square, Circle, Circle, Triangle, Triangle.

Free Iron Curtain:
Square, X, Circle, X, Triangle, Triangle. You can protect several buildings at once, or several vehicles.

Chrono Storm:
If you've noticed, when you chronoshift a couple of times, a strange orb will appear on the map, slowly floating around. The orb is a chrono storm that will electricute ANYTHING that comes near. If it heads directly to your base, kiss a good section of it goodbye. A Chrono storm has a 30% chance of being created every chronoshift. It appears randomly on the map, so be careful not to get carried away chrono shifting.

Strange equipment:
Play map 51 in skirmish or link mode for Allied helicopters firing V2 rockets and Soviets with Allied tanks.

Super civilians:
Play map 41 or 43 in skirmish or link mode for super civilians. The green civilians fire Nukes and the blue civilians have Tesla Beams instead of pistols. Use a mad tank for maximum damage.

"It came from Red Alert":
After beating all the missions, go to Ireland. A quite humoruos feature call "It came from Red Alert" feature giant ants.