Meet the conditions to unlock upgrades that can be bought in the Upgrades Shop.

Upgrade	How to unlock
Follower	Maximize 1 upgrade.
Fortunate	Maximize 3 upgrades.
Hunter	Maximize 7 upgrades.
Mortician	Maximize 4 upgrades.
Prospector	Maximize 2 upgrades.
Runemaker	Maximize 5 upgrades.
Seer	Maximize 6 upgrades.
Warrior	Maximize 9 upgrades.
Wizard	Maximize 8 upgrades.