Overview:
Estimated achievement difficulty: 7/10
Offline: 31 (860)
Online: 8 (140)
Approximate time: 75+ hours (1000)
Does difficulty affect achievements: Yes
Number of missable achievements: 6 (Hall of famer, Dual Division Champion, Prolific Champion, Triple Threatening, Prepared to Win! & Training Expertise)
Glitched achievements: None
Introduction:
The achievements in UFC Undisputed 3 are slightly easier than in the 2009 and 2010 version of the game, apart from two achievements (Online Journeyman and A Quarter Down, Three to Go) which requires you to play 500 fights online and complete 25% of each game mode.
For achievements that are difficulty related you might want the weakest opponent possible and use the strongest fighter. For that I recommend you to make a CAF to fight against, but don't fill in his stats.
A few achievements don't require you to fight against the COM to unlock the achievement, so you can use a second controller in this case.
1: Tutorial
The first thing you should do is do the tutorial and learn the buttons. Become familiar with the game and practice. Starting the tutorial will get you the Willingness achievement and playing 25% of tutorials will lead to A Quarter Down, Three to Go achievement.
2: Career Mode
I recommend starting out with the Career Mode next. When starting the career mode, you can select the difficulty from the start but it cannot be changed during the career, I recommend to select beginner as there are no career mode difficulty achievements . Selecting a low difficulty will make it easier to earn the Hall of famer, Dual Division Champion, Prolific Champion, Triple Threatening, Prepared to Win! & Training Expertise achievements.
First off in your career you want to win the WFA championship and then move to the UFC and win a UFC belt. While fighting in the WFA and UFC you want to play through all 14 training games and earn 4 stars in one of them to earn the Triple Threatening, Prepared to Win! achievements. After winning the UFC title you want to accept a PRIDE GP match, win the three PRIDE fights consecutively to win the PRIDE GP and this will now unlock the Prolific Champion achievement. Now you are back in the UFC you want to continue protecting your title until you are offered a chance to move into a new division, choose a division and win the title to unlock the Dual Division Champion achievement. You should have also unlocked the Hall of Famer achievement which is unlocked by having a very successful career. When you complete the career you will also earn the Storied Career achievement.
3: Other Game Modes
Play other game modes like Title Mode and Title Defence Mode and ss long as you keep winning you'll unlock thePRIDE of a champion, Determined Champion achievements. Play Ultimate Fights Mode to unlock History is Best Both Ways, and Event Mode to unlock Prime Time Fighting.
4. Easy Achievements
Try having a go at the easy achievements that don't take long to do and that you have not unlocked while playing though the game modes. Achievements like Breaking your Best Toys, Chopping 'em Down, GOOOAAL!!!, Face, Meet Foot, All About the Show, Artiste, Even Rocky Had a Montage, and Pound For Pound.
5. Online
After your first win you will unlock First of Many!Eventually, you'll get the Online Amateur achievement for 10 matches, and Online Journeyman for 500 matches. Next, create a camp and get friends to join. You'll get Extracurricular, Practice Makes Perfect, and Fight Camp Frenzy. Also try to unlock the Everyone's a Critic achievement.
6. Clean Up
Go for all the achievements you have not yet unlocked and try for the A Quarter Down, Three to Go achievement.
[x360a would like to thank o H i T M a N z for this Roadmap]