itch.io

Nice !
I don't remember what was my exact build...
But usually, what I do is first to fully upgrade an attack die, then remove not useful dices (1 defense and 2 boost) and last add some die from level 11 or 12.
The aim is to have at least two attack dices in the end, with some boost and a bit of defense.
That way runs are usually around 10 minutes but can be less than that (current WR by Dragomadryl around 7:20 minutes).

/!\ SPOILER /!\
I don't know what level of details you want, but from my experience:
- Aim : Finish the dungeon (20 rooms)
- Fights : You may select the enemy you want to hit, you can only hit one enemy by turn (thus you may want to count and optimize your damages), die placement in the grid is important (purple dices)
- Bonuses between stages : life (heal or increase HP pool), add die (with either slight probabilities differences and/or specific abilities), remove die, and upgrade die (three levels : basic, silver and gold).
Tell me if you want extra details, but for that small (but very nice) game, this might already spoil a lot ¯\_(ツ)_/¯

¯\_(ツ)_/¯

Great Game ! Let's see if it's doable to complete it under 13 minutes ^^