Great guide - thanks
Just one question regarding 'Clean Up on all Aisles' i destroyed all items but 1 wall (but though the walls didnt matter) and didnt get the achievement. I double checked everything was smashed before defeating the blob as i thought the achievement may pop up when you defeat him, and the only thing that was yellow when the feral sense was on was a bit of debris on the floor. I got the blob to smash this but it just stayed yellow.
Any ideas where i am going wrong?