Complex sentence: They give him a gun and tell him to fire a warning shot if the police arrive but an unsatisfied Li'l Dice fires a warning shot mid-robbery and guns down the motel inhabitants once the gang have run off.
Split into simpler sentences: They give him a gun and tell him to fire a warning shot if the police arrive. Unsatisfied with this, Li'l Dice fires a warning shot mid-robbery and proceeds to gun down all the inhabitants of the motel once the gang have run off.