Here is the full list of all 39 UFC Undisputed 3 achievements worth 1,000 gamerscore.
Play 500 or more ranked Xbox LIVE matches.
Clear 25% or more of all game modes.
Win 10 consecutive Fight Camp Exhibition matches.
Win 25 fights consecutively in Title Defense Mode.
Defeat a COM on Advanced or higher in Exhibition or Tournament Mode with each Leg Submission.
Submission Slam or Stomp Escape the COM in Exhibition on Advanced Difficulty or Higher
Use 1 fighter in Career Mode and win the WFA Championship, UFC Championship, and PRIDE Grand Prix.
Win against a CAF that obtained Career Hall of Fame in Exhibition on Expert Difficulty or higher.
Complete Career Mode with a CAF or Roster Fighter.
Play 10 or more ranked Xbox LIVE matches.
Win 5 ranked Xbox LIVE matches in a row.
Play an Xbox LIVE Fight Camp Sparring match.
Play through each Training Game with a fighter in Career Mode.
Use 1 fighter in Career Mode to win the UFC championship in 2 weight divisions.
Obtain any level 3 move for 1 fighter in Career Mode.
Enter the Hall of Fame with a fighter in Career Mode.
Win a match on Ultimate in Exhibition or Tournament Mode with the Simulation Energy Settings.
Create a Highlight Reel with 10 or more different fighters.
Create a Highlight Reel.
Accumulate 15 hours of fight time.
Obtain a 4-star score in a Training Game with a fighter in Career Mode.
Win a ranked Xbox LIVE match for the first time.
Join an Xbox LIVE Fight Camp.
Transition to all of the ground positions.
Rock an opponent with a Foot Stomp to the head in a PRIDE fight.
Create a Logo and apply it to a CAF as a Tattoo.
Obtain a 100% completion score with both fighters in a fight in Ultimate Fights Mode.
Rate contents created by other players in Content Sharing.
Win in each division in Exhibition with Advanced Difficulty or higher.
Clear Title Mode without any interruption.
Win a match against the COM on Experienced Difficulty while using a CAF in Exhibition Mode.
Create a CAF and modify the face with CREATE A FIGHTER.
Play and complete a 6, 7 or 8 card event in Event Mode.
Watch a PRIDE entrance in Exhibition once without skipping.
Get the TKO win by damaging the opponent's legs.
KO the opponent with a soccer kick.
After a KO or TKO, land 4 finishing blows and win the match.
10,000 or more shop points accumulated.
Select a guided tutorial