Armor is percentage so I think 10 bonus is fine. It's good in the beginning but also in the end.
Nope , it's not.I've tried the defensive roar , It's ridicoulous!I am with Doomlord , the ability SHOULD increase with lvl , for ex 10 armor + 0,25x lvl.This could go verry nice , I mean at lvl 100 you' have 35 armor.Change it , to make it better.Also , about unbalanced things , here's something I noticed during my playtrought in the latest version:
-Soul burn deals a way-too-low ammount of dmg , and requires all the spell points to make that demon stronger , while most of the players give up , and start picking the elemental , cause it's the same , even better.
-Spining death is as buggy as hell - if I move , the effect is lost , sometimes the effect is lost even if I am targeted by a spell , or just randomly(I have maximum mana , it start draining but it stops).
-Seal of Ressuruction is way to strong and unbalanced
-Instant slash dosen't have call down and deals no dmg