Fire Emblem Awakening [SPOILERS INSIDE]

There is a huge gap between game play in normal/hard and lunatic modes. In normal/hard, you can 2hko most enimies, and skills like lifetaker and galeforce are great because you consistently kill enemies. Galeforce is not as useful in lunatic since it rarely activates. Skills like Vengance, Vanatage, and Sol are much better, since you rarely will be at full health.