You should be able to easily earn the Role Model achievement. You just need to achieve all of the team bonuses (Co-op Kill, Co-op Stun, Rescue, Diversion, and Knock Out). I think these are all of the bonuses you need, but there may have been one or two that I forgot. But basically, you just need to know how to lock on a persona in order to get this achievement.

To get AEOTM, you need to get Extreme Variety, which you will achieve if you earn 15 different bonuses in a single match. This is pretty difficult even for the pros, but there are threads on the forum dedicated to helping you achieve it legitimately.