Here is the full list of all 12 UNO Rush achievements worth 200 gamerscore. It takes around 2-3 hours to unlock all of the achievements on Xbox 360.
Discard 9 or more cards in one turn.
Successfully call UNO and win a round in the same turn in any mode.
Complete the Interactive Tutorial and pass the test.
Play 10 Scramble cards.
Win 10 rounds in Elimination mode by eliminating all other players.
Play 3 Skip cards in a single round in Partner mode.
Win 5 games using the "Fast" house rule.
Play at least one of each command card in a single round.
Win 5 local four-player matches.
Win 10 Xbox LIVE matches in any game mode.
Score 250 points or more in a single round.
Change the color of the discard pile 5 or more times in one turn.