Yeah... I was ridiculed a lot on this one. Been told countless times that IMIW didn't have enough damage output to do abyss. Well... here is video evidence that it is totally possible. I would honestly use him over Aegon in certain fights cause that just felt too easy and it was just against Omega lol. Even though he already lost 15% health from an earlier attempt, that could've easily been ticked down towards the end.
https://www.youtube.com/watch?v=JZUKzGRUQ5c