4 - 1Adapt or Die Jun. 18, 2015- 4 - 2Dark Crossing Jun. 25, 2015
- 4 - 3Welcome to the Tundra Jul. 02, 2015
- 4 - 4Best Laid Plans Jul. 09, 2015
- 4 - 5Deadly Ascent Jul. 16, 2015
- 4 - 6Snowblind Jul. 23, 2015
- 4 - 7The Fallen Jul. 30, 2015
- 4 - 8Lifeblood Aug. 06, 2015
- 4 - 9So Close, Yet So Far Away Aug. 13, 2015
- 4 - 10Hard Target Aug. 20, 2015
- 4 - 11Touchdown Aug. 27, 2015
- 4 - 12Miles to Go Sep. 03, 2015
- 4 - 13In the Blood Sep. 10, 2015
- 4 - 14Winter's Gamble Sep. 17, 2015
- 4 - 15Awakening Sep. 24, 2015
- 4 - 16Hard Fought and Fairly Won Oct. 01, 2015