The 1000 Year Ark of the Ocean Palace/Bonus

Thief Walrath

Once you completed the episode go to the east part of Dragon Palace - Inner Wall (present) and you'll notice a lot of Ammonites blocking the way. Enter the room nearby to find a portal hidden behind some sort of wall decoration. Go to Dragon Palace past and get rid of the Ammonite and the coral. Enter the Storage (the room at the end) and open the chest to find a Fish Stone. If you go back to the present Dragon Palace and enter the storage again you'll find the Thief Walrath. Defeat it to earn the award "Consumed with the Sand at Kira Beach"

Crafted Armor

1. First, visit a house in Dragon Palace - Outer Wall Bamboo containing a pair of fishfolk twins (bottom middle of map). Tap on the bookcase to read a journal entry that will tell you about a secret stash and a clue on to how to locate it (it tells of a marked pillar).
2. The pillar (which is marked with an 'X') is in Dragon Palace - Outer Wall Plum, in the bottom left corner. Click on the 'X' sign to get the key.
3. Go to Dragon Palace Past - Outer Wall Pine (in the past, not present time). Enter a house towards the middle (it contained an upside down squid in the present time) and tap on the bookshelf to reveal a small tunnel area. You will find a memo. Note: You will have to progress to Chapter 3 first (just keep following the quest marker, you'll eventually pass by that house).
4. Finally, go back to the same house in present time (i.e. Dragon Palace - Outer Wall Pine), unlock the tunnel area, and tap on the middle rock to obtain Crafted Armor.