The Future Past 3 ($3.00)
-Conclude the battle in the ruined future
-If you have Lucina, Gerome, Severa, Laurent, or their parents wait next to the NPC versions of those characters, you can view special conversations.

Apotheosis ($2.50)
-Face of against some of the toughest enemies possible
-Take on 5 waves one after another
-Complete all 5 waves, and recruit Katarina from Heroes of Light and Shadow
-If you complete the first wave of enemies in just 2 turns, then you can face an alternate set of enemies that are the most difficult this game has to offer
-Completing this challenge will get you a Supreme Emblem (sell for 99,999 Gold)

Thanks to VGAMER for the heads up!