- Estimated achievement difficulty: 3/10 for 910, 5/10 for 1000.
- Offline: 35 (1000)
- Online: 0
- Approximate amount of time to 1000: 15-20 Hours
- Minimum number of playthroughs needed: 2
- Missable achievements: 1
- Does difficulty affect achievements?: No
- Unobtainable/glitched achievements: None
- Extra equipment needed?: No
Finn and Jake have been sent by Princess Bubblegum to the Nameless Kingdom. Upon arrival, they discover that the princesses of the kingdom have been kidnapped! The two heroes set out on an adventure to rescue the princesses and save the Nameless Kingdom, encountering many familiar characters along the way.
Adventure Time: The Secret of the Nameless Kingdom is very reminiscent of The Legend of Zelda games. If you've played some of them, you'll see many similarities.
For your first playthrough, you'll want to just enjoy the game and get used to its mechanics, locations, and enemies. There are tons items to collect, many of which will require item or ability upgrades found in the dungeons you will explore. During this playthrough, you will be able to unlock all but one achievement, "Ambitreacherous."
This playthrough will be dedicated solely to Ambitreacherous. For this run, you are not allowed to upgrade your thumps, sword, or armor. That means no picking up thumps after defeating bosses, no rattleballs training, no like like sweater from final dungeon, and no Jake shield upgrade (unconfirmed) from Marceline. See "Ambitreacherous" for a couple tips.
Since you reload your save before defeating the final boss, all but one achievement is missable. You are free to tackle whatever achievements you put off at your leisure before or after finishing the game.
Adventure Time: The Secret of the Nameless Kingdom is a short, but enjoyable homage to The Legend of Zelda. My biggest complaint with this game is that it's small. You don't have a large world or many dungeons to explore. However, if you're a fan of the series and The Legend of Zelda, this game is for you.
[XBA would like to thank Morbious17 for this Roadmap]