Fire Emblem Awakening [SPOILERS INSIDE]

To add onto the money DLC, all of the unit's are class 2+ which means unkillable for awhile >_>; The problem with lunatic is that the first 5 chapters are the hardest because you can't grind. When you get the chance, it's still really difficult and even then the units do more than half their hp in one hit. You'd have to reclass at least once for you to be able to steamroll and throw caution in the wind. Maybe even twice.