Dusk Diver 2

MISSABLE

Unlike the other pieces of equipment, your weapon does not change. Each character keeps their same weapon throughout the entire game. So, instead of replacing it with a stronger version, you can upgrade its Rank. The weapon's max rank increases by 1 every Chapter. So if you are in Chapter 3, the max Rank is 3; if you're in Chapter 9, the max Rank is 9; and so on. Rank 12 is the only exception, as it unlocks mid-way through Chapter 11. To upgrade your weapon's Rank, go to the Tumaz Mart's Store (or access it via any Save Point) and choose "Upgrade Weapon".

To get this trophy, you'll need to upgrade all 5 main characters' weapons to Rank 12, which is the maximum Rank (for your first playthrough), and which can only be done towards the end of Chapter 11 (see Yes, We're Villains ). Around mid-way through the Chapter, you'll face a massive boss called "The Beast of Chaos," and after you defeat it, you'll return to the Tumaz Mart for a meeting in the Communications Room. Once that meeting is over, several things will unlock, as if it were a new Chapter, including the weapons' Rank 12.

Each weapon Rank increase requires a few hundred Wafers and a couple materials, but you don't really need to worry about them. You'll automatically get the required materials, typically from defeating the previous Chapter's final boss. There are only a couple times where you might not immediately have enough to upgrade all 4 weapons, but in those scenarios, you'll get the materials for the others fairly quickly anyway (usually within the next step or two in the main quest).

Upgrading your weapon's Rank is incredibly important, so you should always do so immediately at the start of each Chapter, as soon as the max rank increases.

Firstly, specifically for your weapon, the higher rank increases its attack power. In addition, when you begin the game, your weapon has no Orb slots, but reaching Rank 7 adds one slot to your weapon, and reaching Rank 12 adds a second slot.

Secondly and much more importantly, increasing your weapon's Rank unlocks certain skills for purchase on that character. Rank 8 is probably the most important one, as it not only unlocks another skill to learn, but it also unlocks  your ability to upgrade SP skills. (See Diligent Training .)

Note: This trophy includes D.D.'s weapons as well. It applies to all 5 of your party members: Yumo, Leo, Bahet, Le Viada, and D.D. (It does not apply to the new party members you get in NG+.)