1: Five kills one. (3)

3: Pilot sometimes sounded more irritated (5)

5: How to eat the heart of marsupial (3)

6: Driverless wagon approaches Y with great pains (5)

8: University boards tailless orange and light brown ape (9)

10: Preliminary form of conscription (5)

11: Later round without an opponent (3)

12: Physician that is right is less interesting (5)

13: Pronounced ability to smell negative votes (3)

1: Bad cons make a break and run away (7)

2: Essential part of Cayce's power! (3)

3: Massacre gives Serb leader mirth (9)

4: Sit on marsupials and rats tail (5)

7: Americans look for no revolution (7)

9: Hand calculators, starting as backups, add critical information (5)

11: Throw out faulty nib (3)