The pre-built warrior character can get past the start of the game really quickly, but its damage output is reliant on finding better equipment, which a wizard build would not really need. You can get the Fish Club to slaughter everything past the Cyclops, but getting past the Cyclops with starting equipment is hard and slow.

You could get some intermediate equipment like the Ronin Axe, Bastard Sword, or Spiked Club to get past the Cyclops, but you would still need to get the Fish Club to handle everything after. Getting the fish adds like two minutes, so it would be nice if we had one piece of equipment that could handle both the Cyclops and everything after.

The Elemental Mace is a one-handed mace with 230 power. Certainly strong enough to take on the rest of the game. You can buy it in Nobbler's (and Weaselnose's) shops in the dwarven area for 790 gold. It has a prerequisite of 15 sta and 5 int.

It appears in the shops about half the time. If it didn't appear first try, you can reload the autosave at the start of the room (assuming you weren't poisoned when you crossed the door) and talk to Nobbler again to reset their inventory. That process takes about 8-9 seconds, and on average you will have to do it once. You could also possibly substitute the Ogre's Club, Angel's Axe, or Turncoat's Blade, but you'd have to wait a couple extra levels before you could use them

As for the prerequisite, that's 20 total points. You start with 1 sta and int, so that's 18 attribute points. You start with 3 extra attribute points at level 1, so it takes until level 15 to get that many attribute points. However, we are guaranteed to have Zhug drop their crown, which gives +1 sta, so we can actually do it at level 14. The Elemental Mace itself also gives +1 int, which can be used to pay its own prerequisite, so level 13.

You would reach this level after getting the winch, assuming you gave Thelonious his pickaxe while in the caves. That would work, but we can do better. You really only want to get the winch once Peon tells you about the drunk orc, so you can talk to them at the same time. However, for that to happen, you must have already defeated Peon's bullies. Defeating them with the starting equipment is pretty easy, but it's slow, so we would like to have the Elemental Mace by then so we can just one-shot them.

We can equip the Mace at level 12 if we had 1 more point of either sta or int. We could get lucky and find a stamina ring in one of the chests on the way, or buy a Phoenix Feather or Bag of Fairy Dust from Nobbler as well for 120 gold.

Assuming we need to buy one of those from Nobbler, that means we now need 910 gold. You start with 50 gold. If you use the unlocking glitch to get the Rotten Wine in the chest to the right of the Village Temple's monk, you can use that to beat Zhug and sell all three of your healing potions for 480 gold. That's 530; We still need 380 more.

I looked for which set of chests along the route could semi-consistently get that much. I went with: The chest behind Waxenwicks, the chest near the entrance of the Tavern where you get Mizar's hammer, the chest in the spider cave, and the chest where you get Orlinn's Dice. Those are usually enough, but if they aren't, you can also sell the shield you got from Bart for 83 gold. If that's still not enough for some reason, you can also open the chest behind Thelonious in the rat cave, the chest next to the one you got Orlinn's dice from or the chest next to Nobbler himself.

With all that in mind, here's the route:

1, 2, 1, 1, 1 on quiz for pre-built warrior

Wilkins, Strawman, Wilkins Right Temple Chest, Monk, Waxenwicks Chest Wilkins, Manuel, Wilkins

Gate Key, Prison Hallway Ore, Mizar Temple Hallway Ore, Tavern Dwarf, Tavern Chest, Mizar Bart (level up: sta and regen), Hobbler, Klugg

Zhug, Crown, Peon, Thelonious, Spider Cave Chest, Mushrooms Orlinn, Dice, Orlinn Peon, Nobbler, Livingstone (level up: 11-14 sta, 3-4 int, luck, 1 light, regen) Three Orcs, Peon, Drunk Winch, Wine, Horn Drunk, Peon, Rubblerat

Giles (level up: luck, regen), Zombie, Giles Picture, Crypt, Giles Livingstone, Wax, Giles Boathouse, Candle, Sceptre (level up: luck, berserk)

Cyclops, Oliphant, Room of Three Oliphant, Maze Toy (level up: luck, berserk) Minotaur, Dragon (level up: luck, berserk), Warlock

I have so far managed a 42 minute run with this route.