Every run is scored, and your score becomes a grade (D → S). A better grade means more coins, more reward rolls, and better loot odds.

1. You earn points as you run. Points come from progress and clean play:

• Clearing rooms (+100) & challenges (+50)
• Completing floors (+200) and the dungeon (+500)
• Bonuses: no deaths (+300), perfect accuracy (+200), all loot (+150), all secrets (+250)
• Speed: +2 for every second saved

Losing points: deaths (−50), Pokémon fainting (−20), damage taken (−0.5 each).
Combos: chaining actions without dying builds a multiplier (up to +125%) — this is how top players push their score sky-high. Dying resets it.

2. Your score is compared to par. Par = the total points that dungeon can possibly give at base rate. Your grade is simply your score ÷ par.

3. The grade ladder rises with difficulty:

• C / B = did you clear it cleanly — roughly the same bar on every tier.
• A / S = skill grades. You have to score above the dungeon's own point total, which is only possible by stacking combos and fast clears. An S on Easy = 2.5× par, but on Hard/Extreme = 3.5× so the top of the ladder is genuinely earned.

4. Your grade pays off three ways at once:

• Dungeon Coins: ×0.5 (D) → ×2.0 (S)
• Reward rolls per run: 1 (D) → 3 (S)
• Loot rarity: better grade shifts you toward rarer pools + unlocks the jackpot tier

Bottom line: Finishing a dungeon gets you a passing grade; mastering it (fast, deathless, full combos) is what earns S — and S roughly doubles your coins, triples your rolls, and gives the best shot at legendary loot.