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