Keep do missons intill you get a letter in your mail box about buried relic. Buried relic has 99 floors good luck.
Chat with our AI personalities
talk to lombre after you beat the game
once you beat the game and go to the wordcore
Use water types and have reviver seeds with you
Your Pokemon can't evolve until you beat the game. Once you complete the main plot of either Pokemon Mystery Dungeon games, you may evolve Charmander once it reaches level 16.
You must beat the Destiny Tower dungeon. (Of course, since you know the item exists, you probably knew that already.)