A customer finished a book and paid

Customers finished 100 books

An apprentice visited for the first time

A frog scholar visited for the first time

A ghost visited for the first time

An owl visited for the first time

A gnome tourist visited for the first time

A cat visited for the first time

Every upgrade for gnome 1 purchased

Every upgrade for gnome 2 purchased

Every upgrade for gnome 3 purchased

Every upgrade for gnome 4 purchased

Every upgrade for gnome 5 purchased

Every upgrade for gnome 6 purchased

Every upgrade for gnome 7 purchased

Every upgrade for gnome 8 purchased

Every upgrade for gnome 9 purchased

Every upgrade for gnome 10 purchased

Every upgrade for gnome 11 purchased

Every upgrade for gnome 12 purchased

Every upgrade in the tree purchased

Collected a reader's tip

Collected 100 ✦ in tips

Collected 500 ✦ in tips

Let a tip vanish uncollected

A first shelf section unlocked

Half of the library's shelf sections unlocked

Every shelf section in the library unlocked

Not a single book left on the floor

Earn every achievement in under 90 minutes