via Faeit 212 (a Must Remain Anonymous Source)
I just want to clarify that while it is listed as having a Power Fist
and not a Dreadnought Close Combat Weapon, because it is a Walker it
does not suffer from the Unwieldy special rule, that's why it's
simplified in the codex entry.
Str 6, ws 4, bs4, i4
Multi-Melta / Power Fist (with inbuilt combi-bolter)
can swap the Multi-Melta for a butcher-cannon, or twin reaper auto
cannons (which is pretty cool, since that's an entire riflemen in one
arm, but with less range), twin-linked lascannon or a twin-linked heavy
can swap combi-bolter for a meltagun or heavy flamer
Mark of Khorne: Rage USR
Mark of Nurgle: 5+ restore a hull point OR repair immobilized /
weapon destroyed at the start of a turn. Does not let it get back up
after having been killed unlike Unholy Vigor.
Mark of Slaanesh: Sonic scream, gives it offensive/defensive grenades
Mark of Tzeench: flame weapons (if it has any) are +1 strength and -1 AP (heavy flamers are AP3."
Ill Take 3.