Upgrade all of these items one after another for maximum benefit from your next run.
Weapon Upgrade
Want to increase your weapon-based score multiplier? Purchase new levels here to extend your multiplier.
Shield Upgrade
The same effect as the Weapon Upgrade, but applied when you're smashing your way through obstacles and generally trashing the castle.
Rampage
Investing into this category will make your Rampages last longer and have an enhanced multiplier effect.
Mana Upgrade
Need more mana in your life? Throw some coins at this particular upgrade and they'll appear more often.
Loot Upgrade
Spending money to make more money: ah, the joys of the upgrade store. Still, if you want to gather more coins from those precious treasure chests, upgrade their booty here.

Embark on an inspiring mission of human connection beyond the UCA. Sam — with companions by his side — sets out on a new journey to save humanity from extinction. Join them as they traverse a world beset by otherworldly enemies, obstacles and a haunting question: should we have connected?