×Wait while the tar grows, and concentrate on killing the snake in the northwest portion of its box. Waiting for the tar to kill the snake by filling the entire snake box would leave you with many more roaches to deal with.
Click here to view the secret text
×Kill the tar mother when the tar in the roach box has grown to fill the column with x=21. You can see (x,y) coordinates by right clicking in the game.
Click here to view the secret text
×Scare the roach queens as far east as they can go.
Click here to view the secret text
×Hit the orb with sword pointed east.