Here is the full list of all 15 Lupus in Fabula achievements.
Correct spell from the 1st try
Finish the first level under 30 seconds!
Proper sequence from 1st attempt
Find the portrait lost in time
Correct curse decoder from the 1st try
Correct sequence of offerings - Athena, Dionysus, Poseidon, Zeus
Produce fat from the 1st try without fail
Go sledding without impediments from the 1st try
Blow up doors on the 1st attempt
Stab the chicken without fail warning
Get rid of the bird from the 1st attempt
Get the poodle before music stops!
Kick the demon before his 1st lunch is over
Tag the sinner with corn before the 2nd round is over
Finish the Fable