There are 22 achievements worth a total of 1000 points
Completing the GDI and Nod campaigns
Press the A button 2047 times, the year the game takes place
Complete the Nod campaign
Complete the GDI campaign
Lose to someone Ranked 20 places below you in a MP Ranked Game
Negative Achievement: Skipping the Tutorial suggestion from SP
Negative Achievement: Lose 5 MP games in a row
Negative Achievement: Lose a single player game 3 times in a row
Completing the GDI TOW: Washington D.C.
Play MP for 100 hours
Complete Boot Camp Mission
Gather 100000 tiberium in MP games
Complete all of the single player campaigns.
Scrin Campaign Finished with Gold medal and Bonus Ribbon
Nod Campaign Finished with Gold medal and Bonus Ribbon
GDI Campaign Finished with Gold medal and Bonus Ribbon
Scrin Campaign Finished with Silver medal and Bonus Ribbon
Nod Campaign Finished with Silver medal and Bonus Ribbon
GDI Campaign Finished with Silver medal and Bonus Ribbon
Scrin Campaign Finished with Bronze medal and Bonus Ribbon
Nod Campaign Finished with Bronze medal and Bonus Ribbon
GDI Campaign Finished with Bronze medal and Bonus Ribbon