In the mission "Clean the Ancient Statue" You need to knock over 4 buckets. The 4 buckets can be found on these locations:
First is in the left first tent as you enter the level
Second one is in the second tent to the left underneath a table
Third one is when you walk to the statue up the right ramp (left ends the same but that in the first tent). There is 2 tents. Underneath the furthest away there is the bucket on a box.
Up the ramp overlooking the status (so all the way to the top) there is your 4th bucket to knock over.
You can replay this mission by going to Free play -> Locations -> Clean the Ancient Statue