Complete Episode 6 - "Bright Side of the Moon".
Complete all episodes of Sam & Max Save the World.
Heard 10 different comments about your unicorn.
Complete Episode 5 - "Reality 2.0".
In Episode 5, attempt to chop up everything in the text adventure with your +2 sword.
Complete Episode 4 - "Abe Lincoln Must Die!".
In Episode 4, find the Easter Egg.
Complete Episode 3 - "The Mole, the Mob, and the Meatball".
In Episode 3, get a perfect score on Whack-Da-Ratz.
Complete Episode 1 - "Culture Shock".
Complete Episode 2 - "Situation: Comedy".
In Episode 2, achieve six different cow identities that Mr Featherly will play along with.