Storm Over Warlock, Version 2

The Throgs strike at dawn. Every human in the Terran survey camp dies except Shann Lantee, a laborer with no weapon, no training, and no way off the planet. Now he must survive Warlock alone: the Throgs hunt from above, and something older and hungrier moves through the alien forests below. Andre Norton builds a masterclass in isolation, pitting one desperate man against an entire hostile world. This is pure 1960s science fiction at its leanest and most atmospheric. Shann has only his wits and the clothes on his back. Every shadow could be death. Every decision could be his last. If you want a story about what happens when everything is taken from you and you must find something to fight for, this is it.