Simple guide as to what item upgrades and potions do.
This is mainly for reference if you forget what an item upgrade does or you’re uncertain what that one shop item does.
For the potions, you need to have the Book of Knowledge to identify all the potion names at start, otherwise you’ll have to use an unidentified potion first to know the name. Potion colors are randomized every run.
Some items will stay locked and cannot be obtained as you will need to have unlocked the achievement respective to that upgrade.