As for the walkthrough, it's very simple, I don't remember the exact days... The idea is to run around the castle, level up until you get "Deadly Cold." After that (around day 4, level 7), beat the Seraphs, get to level 11, and also get "Expert Enchantment" and "Expert Racial." Then, in two runs, defeat the Balrogs (with Expert Racial and Deadly Cold, it's very easy - the ring takes out 2 at a time per cast), the second garrison with Goblins and Balrogs - and run to the center with level 25, Expert Chaos, Education, Enchantment, and Racial - it's easy from there. Along the way, max out Summoning (you can't do without it), and collect all possible stat boosters (since I knew the level would be maxed out, and the stats would decide the outcome). Reach the teleport to the enemy at level 32 (I went through the gate with 500 Blue Archers and 50 Seraphs). At the enemy's, pick up 4 Wood, surrender at the Orc dwelling, and pick up another 4 Wood... That's it.
To Lord Vampire: Remember, I told you that you need to ban the Wall of Swords? You can't get 40 without it.
P.S. I played the whole game with a one-week time limit