NCAA Football 10

Set all the sliders affecting user in your favor and all the sliders affecting the CPU against the CPU by going to the Dynasty Main menu, then dynasty options, and then House rules. After that set quarter lengths to 1 min to minimize time spent per game. Sim to the first Bowl week then individually play each bowl game. You can Super Sim during the game to speed things up only intervening at key moments to make sure you win. Repeat with every single bowl and it will unlock when you add the last Trophy to your trophy case.

Edit: You do not need to complete the game yourself. you can simulate the last play (even the entire game if your team wins) and it will still work. You do not need to play a single down {Credit goes to Knucklehead923 for finding this}

This is a complete list of all the bowls and how to get in. Plus the best way and easiest way to get the achievement.

Basically just start a dynasty and pick 12 teams and sim your way to the bowl games, once there win them and get your progress toward all bowl games.

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BIG EDIT - You do not even have to sim through the games, you can select every single bowl game in a row and control one of the computer teams and win them. Wow if i knew this before I would have saved so much times trying to sim. My loss is your gain...

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Credit to SengIV from xbox360achievements.org for this list.

Rose Bowl:
Pac -10 vs. Big Ten

Fiesta Bowl:
Big 12 vs. At-Large

Orange Bowl:
ACC vs. Big East

Sugar Bowl:
SEC vs. At-Large

BCS Championship Game:
BCS #1 vs. BCS #2

Capital One Bowl:
Big Ten #2 vs. SEC #2

Gator Bowl:
ACC #3 vs. Big 12 #4 / Big East #2 / Notre Dame

AT&T Cotton Bowl:
Big 12 #2 vs. SEC #3/4/5

Outback Bowl:
Big Ten #3 vs. SEC #3/4/5

International Bowl:
Big East #4 vs. MAC #3

AutoZone Liberty Bowl:
C-USA #1 vs. SEC #6/7/8

Meineke Car Care Bowl:
ACC #6 vs. Big East #3

Chick-fil-A Bowl:
ACC #2 vs. SEC #3/4/5

Independence Bowl:
Big 12 #7 vs. SEC #6/7/8

Brut Sun Bowl:
Pac-10 #3 vs. Big 12 #5 / Big East #2 / Notre Dame

Gaylord Hotels Music City Bowl:
ACC #5 vs. SEC #6/7/8

Pacific Life Holiday Bowl:
Big 12 #3 vs. Pac-10 #2

Emerald Bowl:
ACC #7 vs. Pac-10 #4/5

Valero Alamo Bowl:
Big 12 #4/5 vs. Big Ten #4

Texas Bowl:
Big 12 #8 vs. Navy or C-USA #7

Roady's Humanitarian Bowl:
MWC #5 vs. WAC #1

Insight Bowl:
Big 12 #6 vs. Big Ten #6

Champs Sports Bowl:
ACC #4 vs. Big Ten #5

Motor City Bowl:
Big Ten #7 vs. MAC #1

Sheraton Hawai?i Bowl:
C-USA #2 vs. WAC #3 / Hawai?i

Bell Helicopter Armed Forces Bowl:
MWC #3/4 vs. C-USA #3

Maaco Bowl Las Vegas:
MWC Champion vs. Pac-10 #4/5

SDCCU Poinsettia Bowl:
MWC #2 vs. Pac-10 #6 or WAC #4

GMAC Bowl:
ACC #9 vs. MAC #2

R+L Carriers New Orleans Bowl:
C-USA #4 vs. Sun Belt Champion

PapaJohns.com Bowl :
Big East #5 vs. SEC #9

New Mexico Bowl :
MWC #3/4 vs. WAC #2

magicJack St. Petersburg Bowl :
Big East #6 vs. C-USA #5

EagleBank Bowl:
ACC #8 or MAC #4 vs. Army or C-USA #6