Purple chests = New Weapons
You’ll probably come across many of these weapons naturally as you explore the world and follow main story events. Some are tucked away and just require you to poke around a bit, while others are rewards for completing mini-games or sidequests. In general, you should keep your eyes peeled for purple chests, as these will always grant a weapon you haven’t found before.
Also, if you miss a weapon in a certain area, you’ll usually be able to purchase it from a weapons store as the game goes on. So if you’re uncertain about whether or not you’ve missed a weapon as you move through the game, be sure to check in with weapon shops.
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Finally, any weapons earned in the Temple of the Ancients will require you to replay that sequence in Chapter 12. As you’ll unlock Chapter Select upon finishing the main game, this will be easier once the credits roll.
