LootLite (UP)

you will need the following items in the zone right after the desert one of which drops in desert. Grey key (area 1 drop) red crystal (area 3) and then the black crystal (drops in zone 5 the area where you need all 3 items) after getting the black crystal to drop and hopefully upon having the other two previously mentioned items you will find a door in that area that will take you to the castle on the map. in order to unlock the necromancer you must at the bare minimum survive that zone in order to unlock the character. Note that to make sure you enter the correct door the symbol of the 3 items will float above the door when you stand next to it before clicking the A button to enter.