Here is the full list of all 20 Walkerman achievements.
Surely, this pinecone will do the trick...
Complete the prologue.
But is karma canon?
Complete Act 1
Complete Act 1's contract after failing to employ the device
Plus 50
Have a run-in with your quarry
Curiosity got the best of you
Score three hits on the first contract
Get your sword back
Complete the item trading quest-line that spans all five acts
Adamantly refuse to learn
Ace Kaula's test
Lend aid to a foreigner in need
Find the sacred branch
Find a better use for the profane
Score three hits on the second contract, and find a familiar face in the market's fog
Introduce two individuals with similar interests
...
Show mercy