Cash in Money In The Bank in WWE UNIVERSE and win using a Custom Superstar (Single Player)
To cash in, highlight the match with the champion of the title you want and press . You should get a prompt asking if you'd like to cash in. Select 'Yes' and the match will start after a brief cutscene.
If you edited your CAW into the MITB match to get the other achievement, you most likely won't get the option to cash in. To fix this, just sim to the next MITB PPV. Make sure your CAW is holding a title and then sim the MITB match (do NOT add your CAW into the match again). Have the MITB winner cash in on your CAW. Play the match as your CAW and win. This will make the achievement pop.
Thanks to CelticWarriorDB for finding this method.
Note:You can ONLY cash in on default titles (WHC, WWE, US, and IC [non-classic]). If you change ALL titles for both shows, you won't be able to cash in at all. Thanks to doomey for pointing this out.
You can put yourself in the MITB match. Just edit yourself into the match and win. I just did. As for cashing in, i'm still trying to figure that out. So good news, no need to fire everyone else so you can get in a match. you soulless heartless people. XD lolz just kidding.
To Cash In. Pick a PPV with a title match in it and press (A) on that match card. It will ask you if you want to cash in.
You cannot edit/force your custom superstar into Money In The Bank matches, it will turn into a regular Ladder match instead.
With that said, how the hell do you get into a MITB legit?! Because I simulated a lot of years and now the game doesn't care about my Custom Superstar, I passed over 3 years and still no MITB opportunity.
Simple. My caw was already champ. Rock wan the mitb match. I just went to play a match my caw was in and it asked to cash in the Rocks briefcase so I did. Then I whooped on the Rock with my caw. Don't need to win the mitb, and doesn't need to be a championship match at first.
You can put your created superstar into the MITB match at the ppv, just by editing the opponents in the match. Make sure the created wrestler you use doesn't already have a title. This stops you from cashing in after you win the match. I found this out twice after winning MITB. Once you win the match, go to the night after at raw, and launch a match that has a champion in it. It will then ask if you want to cash in your title chance. Say yes and you have to just beat the CPU. Which is already quite heavily damaged.