This site's not dead yet! Even though it's been inactive for 6 months, I haven't given up! New dungeons will be added soon.
A "one-shot challenge" is a dungeon with a bunch of sub-dungeons (usually 10 numbered levels), where completing one unlocks the next one, but doesn't allow you to play the one you just completed, and when you complete the last level, the dungeon goes away. The other type of dungeon that's called a "one-shot challenge", which is a dungeon with 20 floors that disappears when you clear it, is put in Various Challenges instead.
The One-Shot Challenges are some of my favorite dungeons in Puzzle & Dragons, including Sunken Serpent Labyrinth, which is my favorite dungeon in Puzzle & Dragons. If that was not the case, these dungeons would probably be put in Various Challenges.
List of One-Shot Challenges:
One-Shot Challenge! 1 [No Continues]
- Lv1 [Tricolor]
- Lv2 [No Water/No Dark]
- Lv3 [No Fire/No Water]
- Lv4
- Lv5
- Lv6
- Lv7 [No Heal]
- Lv8 [No Dupes]
- Lv9 [Awoken Invalid]
- Lv10
One-Shot Challenge! 2 [No Continues]
- Lv1 [Tricolor/5x4 Board]
- Lv2 [No Water/No Dark/5x4 Board]
- Lv3 [No Fire/No Wood/5x4 Board]
- Lv4 [5x4 Board]
- Lv5 [5x4 Board]
- Lv6 [All Att. Req./7x6 Board]
- Lv7 [7x6 Board]
- Lv8 [No Dupes/7x6 Board]
- Lv9 [Awoken Invalid/7x6 Board]
- Lv10 [7x6 Board]
One-Shot Challenge! 3 [No Continues]
- Lv1 [No Wood/No Dark]
- Lv2 [No Fire/No Light]
- Lv3 [No Fire/No Water]
- Lv4 [No Dupes]
- Lv5 [7x6 Board/Skills Invalid]
- Lv6 [All Att. Req.]
- Lv7 [Awoken Invalid]
- Lv8 [Dragon Enhanced/No Heal]
- Lv9 [6 Stars or lower Enhanced]
- Lv10
Sunken Serpent Labyrinth
- 1st Floor
- 2nd Floor
- 3rd Floor
- 4th Floor
- 5th Floor
- 6th Floor
- 7th Floor
- 8th Floor
- 9th Floor
- Last Floor [Fixed Team/No Skyfall Combos/Orb move time 8 secs]
Heavenly Palace of Heretics
- 1st Floor
- 2nd Floor [20000 HP]
- 3rd Floor
- 4th Floor [Assists Invalid]
- 5th Floor [6 Stars or lower Enhanced]
- 6th Floor [Special]
- 7th Floor [7x6 Board]
- 8th Floor
- 9th Floor
- Top Floor [No Dupes]
Cloud City's Scarlet Blaze
- 1st Floor
- 2nd Floor [Teams of 4 or less]
- 3rd Floor [7x6 Board]
- 4th Floor [Leader Skills Invalid]
- 5th Floor [God Enhanced]
- 6th Floor [No Skyfall Combos]
- 7th Floor [Awoken Skills Invalid]
- 8th Floor [Special]
- 9th Floor
- Top Floor [All Att. Req.]
The Queen's Temple of Dance
- 1st Floor
- 2nd Floor [Wood Enhanced]
- 3rd Floor [6 Stars or lower Enhanced]
- 4th Floor [Orb move time 8 secs]
- 5th Floor [Assists Invalid]
- Top Floor [7x6 Board]
Astral Plane Deity
- 1st Floor
- 2nd Floor [No Light]
- 3rd Floor [All Att. Req.]
- 4th Floor
- 5th Floor [7x6 Board]
- Top Floor [No Dupes]
Eternal Jail of the Devil King
- 1st Floor
- 2nd Floor
- 3rd Floor [Special]
- 4th Floor [No Skyfall Combos]
- 5th Floor
- 6th Floor [7x6 Board]
- 7th Floor [Awoken Skills Invalid]
- 8th Floor [No Heal]
- 9th Floor
- Last Floor
Crafting Dragonbound's Temple of Jewels
- 1st Section
- 2nd Section [Evo Material Enhanced]
- 3rd Section [7x6 Board/Orb move time 30 secs]
- 4th Section [10 HP]
- 5th Section [Teams of 3 or less]
- 6th Section [No Skyfall Combos]
- 7th Section [No Heal]
- 8th Section [Special]
- 9th Section
- Last Section [No Dupes]
Challenge of the Sky Knight
- 1st Floor
- 2nd Floor
- 3rd Floor
- 4th Floor
- 5th Floor
- Final Floor
Palace of the Sea Deity [5 Stars or lower only]
- 1st Floor
- 2nd Floor
- 3rd Floor [Awoken Invalid]
- 4th Floor [No Heal]
- 5th Floor [7x6 Board]
- 6th Floor [No Skyfall Combos]
- 7th Floor [Orb move time 6 secs]
- Final Floor
Burning Sand Labyrinth [7x6 Board]
- 1st Floor - Mythical
- 2nd Floor - Mythical
- 3rd Floor - Legend Plus
- 4th Floor - Legend Plus
- 5th Floor - Mythical Plus
- 6th Floor - Mythical Plus
- 7th Floor - Annihilation
- Final Floor - Annihilation
Number of main dungeons in this category: 13
Number of sub-dungeons: 114 (SO001-SO114)