help my game is bugged. i need a fix chanters wryms dont die. follow around like a party member.

help my game is bugged. i need a fix chanters wryms dont die. follow around like a party member. they spawn in the middle of maps too ruining them for me. I have ot finish what they start to get out of combat. sometimes its harder rather than easier on hard mode. they display ' knocked out ' when they die but they risefrom the dead when out of combat. I need a fix.