Here is the full list of all 12 Polda achievements.
Finish main story.
Finish the game in 1 hour or less.
Finish the game in 45 minutes or less.
Finish the game in 35 minutes or less.
Read at least 2000 hints.
Teleport yourself at least 2000 times.
Walk at least 10 km.
During the game, connect with the original authors of the game.
Stay undercover and don't reveal yourself.
Have some fun while playing. And not only with Mrs. Ištok.
Listen to at least 2000 whole messages.
Completely bankrupt Pankrác.