Please be as specific as possible when letting us know what is missing or incorrect. For example, say "this game's trophy difficulty should be 8/10", with a link to a website corroborating this difficulty estimate (if possible), not "this game's trophy difficulty is wrong".
Torment your enemies atop the Nightmare Mount Skin, available in the Nightmare Pack. You'll also receive three Diamond Chests and five Gold Chests. Plus, get 400 bonus Crystals!