Hulk's Anger not working on Ultron

Unknown

Anyone else having trouble with Hulk's anger power not activating against Ultron and his sentries? They're able to grind his health down to zero without him every turning any tiles green. Is there something I'm missing?

Jasonzakibe

Are they doing enough damage to trigger the ability? How many black covers do you have?

fmftint

its not a bug, outside of core meltdown sentries don't do enough damage in a single hit to break the 5% threshold