NCAA Football 13
36 Achievements
1,000
15-20h
Unstoppable
Win a game by 35+ points on Heisman difficulty (excludes Co-Op).
15
How to unlock the Unstoppable achievement in NCAA Football 13 - Definitive Guide
Pick a decent 6 star team such as Alabama, then choose your opponent as a 1 star team such a Texas State. Have the difficulty set to Heisman and the Quarter Length to 15 minutes. After the coin toss, do a full simulation to the end of the game. By the end, your team should have at least 50+ points and you will unlock this achievements and
Match up a powerhouse school vs a D rated school (I did Alabama vs Memphis). Set the difficulty to Heisman and choose the Powerhouse school. Set the quarter length to 15 min. Then when you get to the kickoff screen, choose SIM and simulate the entire game. Alabama won 82-26 & I've heard of even more lopsided victories. Trophy will pop at the end of the game.
Also received the Keep 'Em Honest trophy at the same time.
Pick an A+ team and face a D- team. Set the quarters to 15 minutes. Then just super sim to the end of the game. You should be winning by much more than 35 points.
Be sure to change the difficulty to Heisman and change the time to 10 minutes before starting the game at the pre-game menu.
A good match-up for this is USC Trojans (your team) vs. Akron Zips (CPU).
An easy way to unlock this achievement is by using a second controller. Start up an Exhibition match with your second controller and choose the teams that you would like to play with. On the Settings Screen, make sure you have the your skill set to 'Heisman'. You can change the Quarter Length to whatever you would like, but I recommend making it only a couple of minutes so you don't have to wait long until the game is finished.
While in the game, you can play normally or you can use this quick method to score really fast. If you want to get some quick scores, have your second controller's team select a Field Goal Block, while your team selects a long pass play. Pass the ball immediately after hiking the ball to ensure a completion. Keep doing this until you reach 35+ points.
An alternate way to unlock this and Keep 'em Honest is by simulating. Start up an exhibition game with a high-ranked team against a bad team. (I used Alabama vs. Texas State) Make sure the difficulty is set to 'Heisman', and the Quarter Length to 15 minutes. After the coin toss, do a full simulation until the end of the game. After the game is complete, you should have 35+ points and have unlocked both achievements.
Achievement will unlock after completion of the game.