Well, I've mostly completed Hexxit.  I could go to The End and beat the dragon, but that seems simple after  beating the Twilight Forest bosses.   Although a Wither fight might be fun, getting wither skulls in my crappy Nether wouldn't be.
Completed Trophy Wall.  Clockwise from top left:  Carminite Ghast, Naga, Skeleton, Hydra, Zombie  Center:  Twilight Lich
Sphax texture Biomass Armor
Sphax texture Livingmetal Armor
A headband from the LegendGear mod.
My mighty Diamond Giant Sword!
Completed Scale set and meteor sets, Sphax texture.