When using the active skill "Drain Essence" it will continually fail with the message "Target is Immune" even though you have used the ability on several other similar mobs before. I have died several times due to the fact I expect to get my HP back from a mob only to have to spam the button until it works...sometimes it does other times the target though a common humanoid HUMAN target is immune...Please fix or my characters whole survivability is ruined and the character is then unplayable and then your game turns into the give back to Gamestop pile.