Day 4, 12:00, for 8 hours: 11 zombies at ×1 health and ×2 attack.
Part of Endless tier 1, day 4 of 5.
When it ends: 
Scrap Paper
Scrap Metal
Five-Spice Beef Jerky (Endless rewards, tiers 1-4)
Day 4, 12:00, for 8 hours: 11 zombies at ×1 health and ×2 attack.
Part of Endless tier 1, day 4 of 5.
When it ends: Scrap PaperScrap MetalFive-Spice Beef Jerky (Endless rewards, tiers 1-4)