This is guide how to easy and quick get achievement: Free the Meat

1. Start new game
2. Go before barrel and press QuickSave button
3. Destroy barrel and press QuickLoad button
4. Destroy barrel and press QuickLoad button
...
10. Destroy barrel and obtain "Free the Meat" achievement

Achievement:
Destroy the 10 hidden barrels.

Note: This time is probably only way how to get this on steam play game without break or try this way.