Hard difficulty achievements, just combat, or portals and death penalty too?

We probably don't know this yet, but the achievements for beating bosses, killing all creatures on hard difficulty, do we think that is just the combat modifier? Or also death penalty and portals? Hopefully just combat as that seems doable. If it is death penalty and portals that seems almost impossible.

Curious to hear thoughts, or it would be good to get some clarification on this.

Going to start my dedicated server with just combat on hard and portals and death penalty on normal and will report back in 100 hours of game time. Will need to get a good group together to do all the hard modifiers, let me know if you are interested