Thunder Cage is the first Ultimate weapon you get in The First Descendant, and it's a very strong weapon. It's also the best weapon for Bunny thanks to its unique ability that deals AoE Electrical damage.
BUILDING THE BEST THUNDER CAGE The First Descendant – How to Build the Perfect THUNDER CAGE
Whether you're a Bunny main or just looking to get the most out of this Ultimate weapon, this is the best build for Thunder Cage in The First Descendant.
Since Thunder Cage is a submachine gun, its reload, change, and movement speeds are already at a comfortable level. Instead, you can focus on offensive modules that boost Firearm ATK, Critical Hit, and Weak Point Damage. Try to invest as much as possible in Critical Hit Modules first, and then start adding others.
Here are some of the recommended modules for Thunder Cage: