Torrona's Box Achievement in Vampire Survivors

As the description says, you need to have six evolved weapons at once. Six weapons is the maximum you can have, so in order to do this, you'll obviously need to be playing as a character whose starting weapon can be evolved. You'll then need to carefully pick your weapons and items such that they all pair up for evolutions, and then level up to around level 50-55 to get all six of your weapons to level 8 so they can be evolved.

This can be done on any stage and with any character whose starting weapon can evolve. I recommend playing on Inlaid Library, and you can play as any character in the first few rows. The best weapons to get to ensure survival long enough to evolve your six weapons are definitely:
 

• Santa Water + Attractorb
• Axes + Candelabrador
• King Bible + Spellbinder
• Lightning Ring + Duplicator
• Runetracer + Armor
• Fire Wand + Spinach

However, feel free to choose the first six weapons offereed to you when you level up, rather than ones on this list. If you need any help remembering which weapons pair with which items, refer to Candybox (5G) for a completed Grimoire of all combinations.