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