User blog comment:Seieireppa/God Eater:Universitas, chapter 47: Wings Towards Tomorrow (Arc 2 final chapter)/@comment-14812118-20150729023113/@comment-1419424-20150729023739

Basically he can regenerate from anything short of being reduced to dust or otherwise vaporized.

And believe me, there won't be much room for ranged combat against Feldman.