completed deep dungeon

[kingatlas]

I used second save slot to try solo, and I still keep my gear. but it doesn't give you anything when you get silver chests

[Moomba33]

I used second save slot to try solo, and I still keep my gear. but it doesn't give you anything when you get silver chests

Maybe there's a cap on how high your stats can grow within each floor set?
The developers might have wanted to prevent people from just grinding floors 1-10 for the i135 weapons.