To easily achieve a high rank on the player leaderboard, go to an online player match. Go to "Create Game" > "House Rules". Set the game to an Elimination match with no points and play against the CPU. You will receive 10,000 ranks by winning 20 games.
ACHIEVEMENT - HOW TO UNLOCK Ace! (20 points) - Go out without drawing a card. Bluff (10 points) - Bluff on a Wild Draw Four twice in the same game. Devotee (25 points) - Win 40 games of UNO. High Noon (15 points) - Play 40 Draw Two cards. Multiplayer (10 points) - Successfully complete a 4-player game of UNO in any mode on Xbox Live. Quick Change Artist (15 points) - Change the color of the discard pile at least five times in a single round. Skip To My Lou (15 points) - Play 40 Skip cards. Twister (15 points) - Play 40 Reverse cards. UNO! (10 points) - Get UNO! and win the game. UNO Shark (30 points) - Win ten 4-player games of UNO in any mode on Xbox Live. Wild Abandon (20 points) - Go out with a Wild or Wild Draw Four card. Wild Thing (15 points) - Play 40 Wild or Wild Draw Four cards.