At the "?" box inside the Krypt, press Nunchuck Up, D-pad Down, RZ, Nunchuck Down, C, D-pad Down using a Wii-mote and Classic Controller at the "?" box inside the Krypt to unlock Early Taven concept art. Alternately, press Up, B, RZ, Down, L, B at the "?" box inside the Krypt using a Classic Controller.