Played on GTK3Vice. This game looks intimidating when you first start playing it, but once you understand how combat works and how the gameplay is supposed to go (including spells and map placements), it becomes easy as you realize how repetitive the mechanics become.

I followed Saradoc's route except for Level 13 and 14, in which I used the blast spell to change the route. I also noticed using the sleep spell doesn't affect the map layout and teleportation places of the following levels, and since everytime you use it the enemies remain still, you can actually move faster while using it. Because of this I strategically used the sleep spell during some levels to shave a couple of seconds.

From level 11-14 there's plenty of room to design other routes that might be faster, this is the most practical I found. Also I don't know when the time starts or stops. I started when the title screen disappears, and ended when the screen flashes for the first time at the exit of the last level.

[mod edit: It might be a bit arbitrary, but I timed from the timer appearing to the screen going fuzzy.]