I think my main objective for the event will be farming the archers on last map to feed to Spica for Skill Level, since I don't want to use a shitload of crystals just to give Len a few CR and SL. Btw last map as Lafate wrote is kind of a joke if you have been playing for a few months. Still I don't like these events where you have to spam crystals to get a perfect unit, but I'm a free player so I guess I dislike everything that involve spending money xD