At the "?" box inside the Krypt, press ZR, D-pad Right, D-pad Left, D-pad Down, D-pad Right, D-pad Up using a Wii-mote and Classic Controller at the "?" box inside the Krypt to unlock the Falling Cliffs arena. Alternately, press ZR, A, Y, B, A, X at the "?" box inside the Krypt using a Classic Controller. Alternately, defeat Drahmin in Konquest mode.