The mission: This was the first flight of the Lunar Module and as such was basically a systems test. It would be the first firings of the descent and ascent engines in space. The descent engine was also the first throttleable engine operated in space. There also was  a 'fire in the hold' test where the ascent engine was fired while still attached to the descent stage. This would simulate staging conditions experienced during an abort during descent to the lunar surface. 
All mission objectives were achieved.