Easy "Murderer" Achievement
Before smashing all the crates and particulary the one with the teddy bear on it, use your axe on the sheep after the cemetary. Only then you can smash all the crates that weren't necessary for the achievement 'Smasher' and for advancing in the story. Crates you need to smash to reach the sheep (and to use the axe)
Where you find the axe.
Where you began the game.