The enemies have a nasty habit of swarming on you, some try to surround you and others that are immobile keep shooting at you barrages that can drain your HP in less than five seconds if you aren't careful.
The PP for each weapon has been done away with. Initially, I thought this would be bad, but feeling it in practice, I like this method better. The PP meter fills quickly and if you connect accurately, charging each hit, the PP fills much quicker, letting you spam those same enemies that were pummeling you less than five seconds ago.
The evasive roll is also a nice addition, especially when monsters like the Svaltus begins doing that attack in which it swings its sword, hitting everything in reach. Now, you just time a roll correctly, and you're safe.
Defense has been added as well, letting you use a shield, which you can equip with a saber, wand, single dagger, whip, etc. But can be executed with two handed weapons like dwin daggers and swords. It drains PP, but it's no real problem...