Here is the full list of all 10 nanos world Playtest achievements.
Blblblblb! Start the game 137 times
Rise and Shine! Join servers 66.6 times
Experience 2^8 Scripting Errors
At'em ball! Get killed by props for a total of 62 times
Carry Props for a total of 64000 meters
La Creazione di Adamo
Bhavacakra! Reincarnate 76 times to pay off your Karma
That's what I'm talking about! Send 502 chat messages
Get out of the way! Get roamed by vehicles for a total of 47 times
Sentenced to Guantanamo Bay after killing 97 players