Here is the full list of all 13 Pan-Pan achievements.
Beat the game.
Find the old crashed ship.
Hello world. Greet all creatures.
Let the stick do the talking. Smack all creatures with the stick.
Visit most of the places in the world.
Deliver a piece to the broken ship.
Smack a lot of stuff with the stick.
Collect 100 fuel seeds.
Collect 10 fuel seeds.
Collect 1 fuel seed.
Travel 10000 meter in the world.
Find the battery part needed to fix your broken ship.
Steal an egg.