Rotline

Permanent upgrades

Bought with Blood Marks and kept for every run. Each rank costs more than the last.

Lab

One-time discoveries that change how every run starts. A line means you need the one above first.

Phone

Drag anywhere with one finger to walk. You aim and fire at the nearest zombie on your own. Double tap throws a grenade. While reloading, lift your finger when the marker is in the green for a quick reload. Buttons on the right: Focus, dodge-roll, grenade.

Desktop

WASD to move, mouse to aim and shoot, Space or G grenade, Shift dodge, R reload, Q swap, E trade, right click (hold) or F for Focus slow motion, Tab or P pause (pick your gun and throwable there), Esc back.

Trader

Appears at random for a short time. Follow the gold arrow and walk into him to trade. Research there unlocks new gear.

Arena

Cars, sandbags, crates and tires block you and the zombies, but you can shoot over them. Zombies beat them down. Shoot red barrels to blow up the crowd.