Here is the full list of all 13 Pan-Pan achievements.
Let the stick do the talking. Smack all creatures with the stick.
Smack a lot of stuff with the stick.
Beat the game.
Hello world. Greet all creatures.
Visit most of the places in the world.
Find the old crashed ship.
Steal an egg.
Collect 100 fuel seeds.
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.