Odin Sphere: Leifthrasir, the HD remastering of VanillaWare's stylish PS2 action-RPG, will add a few new game modes upon its English-language release this spring.

As reported by Gematsu, one addition is a New Game Plus mode entitled "Xtra New Game". This lets you replay the game while retaining your ability level and inventory items. However, enemies will be much harder in Xtra New Game, and are intended to provide a sturdy challenge at the default setting.

If that's not tough enough, there's also the new "Hell" difficulty in which your health meter remains locked at the default 200 HP.

Finally, Odin Sphere: Leifthrasir will add a 30-round Boss Rush mode wherein each boss (and mini-boss) is set to level 50 and there are no checkpoints or options to use item boxes.

Odin Sphere: Leifthrasir is due 14th January in Japan and confirmed for a PS4, Vita and PS3 release in North America this spring. Publisher Atlus hasn't yet confirmed a European release, though here's hoping that changes soon.

Here's some video of Odin Sphere: Leifthrasir's new modes in action: