very easy boss to kill if you do what you should not hit it what it tranforms

• Kardun will sometimes glow red and attack 5 times in a row, the last hit is a knockback CC 
• His transformation should happen when he hits 75% and 25% of his total hp
• After losing his transformation Kardun is vulnerable to attacks so burst him during that
• During his transformation phase be sure to not get hit, keep away from him entirely. 

While Kardun is easy to kill, the transformation invulnerabilty is a time-waster, and should be changed. But then again many Pit of the Undying bosses have time-wasting mechanics, so a rework would be nice. We are better off without unskipable cutscenes or enemy invulnerabilty phases.