Here is the full list of all 35 Willy Morgan and the Curse of Bone Town achievements worth 1,000 gamerscore.
Obtain all achievements in "Willy Morgan and the Curse of Bone Town"
Complete the adventure
Shoot the cannon
Make Jimbo "almost" human
Examine the voodoo doll
Find the cave
Find the exact spot on the map
Complete the map of Captain Kidd
Switch the guns
Break the fortune cookie
Find the Fabergé egg
Find the golden dragon
Use Thor's hammer at the amusement park
Examine the three stained glass windows inside the church
Find Captain America's shield
Examine the drugstore sign
Notice the design of the table cloth
Examine the posters outside the library
Examine the shower in room 09's bathroom
Try to pick up all the apple cores in room 09
Notice the pattern on the floor of room 10
Examine all the pictures and sculptures in the corridor of the Dead Man Inn
Reach Bone Town
Mount the bicycle
Use the microwave
Examine the clock in the kitchen
Examine the owl statue in the little bookcase
Read all the post-its
Examine the grandfather clock
Use the rubber hammer on the piggy bank
Combine two objects in the inventory
Notice the book in Willy's room
Look in the mirror in Willy's parents' room
Examine the poster in Willy's room
Examine the painting in Willy's room