Yep, takes more skill than doing it "legit", done with warlock and titan, titan doesn't work since the invisible floor, don't know if they patched Atheon to stay in aoa grenades. They did patch the floor so you had to "push" him past the centre platform towards the door, for some strange reason they only patched the floor as far as the platform, past the platform was still a hole.

That's one of the parts that can be soloed.