Diablo 3 has been finished already.

Its first-ever public conqueror goes by the name of Yoshichan, and he clocked the game on normal difficulty in 12 hours and 29 minutes.

Yoshichan guided his Barbarian to the endgame before posting his final game statistics on NeoGAF.

His secret? "Frenzy baba with lots and lots of mobility and defensive skills; 415 DPS unbuffed, around 700 DPS buffed."

He is far from done with the game, however.

“All right guys, wish me all good luck in nightmare!" he posted.

Not everyone managed to play the game last night, let alone face down the titular Lord of Terror.

Despite Blizzard’s extensive stress-testing of their architecture during the Diablo 3 beta, many users struggled to log on to servers when they opened at 7pm last night.

Anecdotal evidence suggests delays of up to one hour were common, with “error 37” repeatedly popping up on many players’ screens.

The servers were almost immediately at capacity following the game’s launch, forcing Blizzard to open more to the public.

An official message on Blizzard’s Battle.net forums warned of delays.

"Please note that due to a high volume of traffic, login and character creation may be slower than normal.

"If you're unable to login to the game or create characters, please wait and try again. We've temporarily taken our Battle.net websites offline and launched more servers to accommodate for the traffic. We hope to resolve these issues as soon as possible and appreciate your patience."

The error appears to have been resolved this morning.