In Pyramids for the 3DS, you can apparently get three stars after completing a level. The one with the symbol of the open door appears to be given if you just complete a level, but the two other ones have me stumped. One is a bag of coins, and the other one is a bag of coins with a timer.
I assume the latter one has something to do with completing the level quickly, but what about the bag of coins star? It might have something to do with collecting treasure or coins in a level, but then again, some of the early levels don't seem to have treasure in them - so how would I get that star?
Am I right in my assumptions? If so, how do I get these stars?