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