Mangog manhandles the Destroyer and bites the arm clean off the armour, defeating it. Most of the battle is off-panel but it's clear Mangog is way above it.
Worth noting that Mangog strongly suggests the soul animating the armour (Freya) is weak so it's possible that the armour was weaker than usual.
Also in the previous issue it is stated that this Mangog is more powerful than he has ever been previously (and this is backed up by him shrugging off the same attack that defeated him under Jurgens and then physically tearing apart a Mjolnir duplicate).
Is The Destroyer armor totally destroyed (No pun intended.)? Or is there some resemblance of it still left? Did anyone die this issue? Mangog does indeed sound like he's more powerful than before.