This will be maybe your first achievement.
As soon as you gain control, pick up the bottle from the rubbish (try to sell it to the man to get another achievement), the windsock (on the wanted poster's right) and the crutch (below the window).
Use the bottle with the worm in order to get it drunk, than pick it up.
Open inventory
and use the worm with the crutch, to create a slingshot; then use the cork with the slingshot and aim the fish (not the pigeon).
As soon as the pigeon fly to the floor, use the windsock on it and bum: achievement unlocked!