Score 30 or more points in the shooting gallery.
Take John's bucket to the end of the game.
Let the ducks swim in the Fisherman's bath.
Dispense all Arque Water bottles in a single playthrough.
Get 5 headshots with a firearm weapon.
Remove a tripping hazard by creating a slipping hazard.
Kill two infected with headshots using a single bullet.
Shoot an innocent bird from the sky. (Why would you want this?)
Flush 10 items in the Fisherman's cabin.
Tidy the coffee cups from the refreshments table in the Arque teaching room.
Finish the game.
Destroy Arque security cameras.
Listen to all tape recorders.
Align the model satellite dish with its real-world counterpart.