This was a fairly straighforward run...
Buh?... Wha?... Straightforward?... :o
Um... Okay, granted, Malicious Blades is crazy powerful once you achieve it, but achieving it in a melee-only game is quite difficult. Achieving it in a Nightmare melee-only game is really quite pretty damn difficult. I would say achieving it and winning the game in the space of an hour is close to impossible! (I would have to carefully plan every move and take my time!) Achieving all of that with 92% kills seems... erm... even closer to impossible! (25 levels plus 8 generated levels means that on average, it took you less than two minutes to clear each level, all by melee!) But this... you cleared Hell's Arena with a (presumably unmodded) combat knife without Berserker trait! That's sexually intimate with impossible! O_o (or something?) :P
Okay, okay, sorry, maybe I'm getting carried away here. I know it's all theoretically possible, but I never imagined someone could get Arena Diamond in a Technician game! I haven't played 0.9.9.5 much, though, so maybe there's some trick to it that I haven't discovered.
Have you really played 1240 games in this version already? That was fast! (Or did you copy that over from the previous version somehow? Can you do that? I've never tried)
Oh, and one more thing... Unless they changed it in this version, you can't two-weapon the Longinus Spear with a knife; they have to both be knives. (The Butcher's Cleaver counts as a knife in this case) You still get the bonus of the resistances, but you don't hit with both weapons.
EDIT: Another curious thing:
He left the Arena as a champion!
On level 5 he stormed the Chained Court.
On level 5 he found the Arena Master's Staff!
On level 8 he encountered the Phobos Anomaly.
It doesn't say that you defeated the Arena Master! Is that a bug? I know that if you defeat him in the previous version in Nightmare, it reports it.