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