I imagine there used to be food and hunger like other roguelikes and that was cut out since it is also tedious. I'm sure we can figure something better out. It doesn't have to be a punishment for being slow, it can also be a reward for being fast. Ideally it should incorporate both. I don't have a great idea but let's brainstorm. My ideas so far:
- Add a loot/exp bonus buff that increases with kills and fades with time.
- Give a similar buff but instead of increasing loot and xp it increases your max health and resource bars.
- Add bosses/vaults/bonus level entrances which flee/close/disappear after X turns. Do not tell the player when these cowards are on the level but do tell the player when they leave thus encouraging them to search harder next time. Don't spawn these on levels with escorts.
- Add a days adventured clock on the character sheet (or just on the new day announcement) and give achievements for fast runs.
- Add a birth option where you have a deadline to win the game.
- Add "reinforcements are coming" timers to many levels, especially orc prides but also some earlier zones. The reinforcements patrol around the dungeon in a group once they arrive.
- Add monsters who flee and sound the alarm, aggroing everything in their faction and sending them to your last known position (hopefully by many different routs so it's not just a conga line of doom).