Collect a Spybot

Kill Two Enemies With a Single Ricochet Round

Do a Trick Jump While Going at Max Speed with the Hoverboots

Collect a Gold Bolt

Get a Weapon to Level Five

Acquire a Piece of Armor

Play Calvin's story again

Look in all peepholes and telescopes long enough to hear Edith's commentary

Get Separated in Nefarious City

See Johann's name in the ending credits

Knock all the letters of Gregory's name into the bathtub

Rescue Taka from Mongol captivity.

Discover a Pillar of Honor and collect its Sword Kit.