1: Requires five kills, or a single accurate shot. (3)
3: Vagrant going over a little river to a foreign country (5)
6: A heron regrets losing its wings (5)
7: Complain about the horse (3)
8: Exercise is right for a one-time actor (9)
10: A hint for the snooker champ? (3)
12: Round of fire involving Vietnam's leader in Laos disturbance (5)
14: Sweet stuff to eat around 1991, e.g. (5)
15: Age of neo-catastrophe? (3)