Keywarden was pretty tough (well, strictly speaking, not tough - but dangerous). Hit me twice w/ something that took me to half health. Otherwise just kited him around and spammed peircing orb when I had the chance. Took a while (not as long as D, though, of course).
I aborted twice: Once against a champ pack of corrupted angels w/ extra health/frozen/arcane/something right as I entered the silver spire level one. Once against an champ pack of mallet lords with extra health/arcane/something/something right as I entered the silver spire level two. With no room to kite/fight I decided not to risk it against either pack, although with room to kite/fight I think I'd have had little trouble.
So yeah. There it is. Glad I did it but, you know, there's the whole "it was nerfed" thing. Other than the keywarden, and the two packs that I remade for because I had no room to kite, it was pretty easy.
BraveRobin is X/X complete on all acts, all difficulties, all solo. Inferno up to the start of 'Betrayer of the Hoaradrim" in act II was done prepatch.
Edit: Adding unbuffed stats at time of D kill so if I change gear and someone googles this later the info is there
55201 Health, 4110 Armor, 33052.62 DPS, 18.6% dodge, resists 616phys/658cold/782fire/728light/644poison/616arcane, 608 life per second, 224 life per hit
Skill build: http://us.battle.net/d3/en/calculator/wizard#blXQiO!bZW!bbaYbc