Here is the full list of all 36 UFC Undisputed 2010 achievements worth 1,000 gamerscore.
Create a fighter in Create A Fighter
Win a fight against the CPU with a fighter you've created in Create A Fighter
Experience an entire 8 fight event card in Event Mode.
Win 10 Xbox LIVE Exhibition matches in total
Win an Xbox LIVE Exhibition Ranked match
Win 10 Xbox LIVE Exhibition Ranked matches consecutively
Xbox LIVE Exhibition - Obtain all types of gold medals
Join an Xbox LIVE Camp
Act as a trainer in Xbox LIVE Camp Training
Compete in a Champion vs. Champion fight and also make the UFC Hall of Fame in Career Mode
Complete the Career Mode
Collect all Topps® UFC trading cards
Win a fight with a Submission Transition
Is there a doctor in the stadium!?
Win a fight by Submission against a non-CAF, Expert CPU in the first 60 seconds of Round 1.
Win a fight by KO/TKO against a non-CAF, Expert CPU in the first 60 seconds of Round 1.
Win a fight by Flash KO against a CPU opponent.
Complete the Title Defense Mode
Complete the Title Mode
Go through all tutorials
Win at least one championship in the Tournament Mode
Play all modes at least once, check the shop and all options
Touch gloves at the beginning of 10 matches.
No respect for your opponent.
Complete all A, B, and C class challenges (Red and Blue Corner)in a fight in Ultimate Fights Mode.
Win a Champion vs. Champion fight in Career Mode
Win 25 Xbox LIVE Ranked Matches
Win 50 Xbox LIVE Ranked Matches
Win 75 Xbox LIVE Ranked Matches
Win 100 Xbox LIVE Ranked Matches
Download an Event for Event Mode
Now you're dirty boxing with Pride!
Win by all methods of stoppage against the CPU. (KO, TKO, Submission, Doctor Stoppage)
Dodge 3 consecutive strikes via sway (Outside of Tutorial Mode)
Complete a post-fight interview in Career Mode
Reach "World Class" (Level 3) status with a technique or move.