Cold resistance II is my first purchase once Greenland is touched—otherwise the cure bar rockets the moment the lab spins up.

Never devolve insomnia; it wrecks research speed and keeps the cure progress crawling.

I love chaining shutdown events—trigger paralysis, then erupt into hemorrhagic fever the second borders close.

If a rich country stays healthy, buy drug resistance and refund coughing for a bit—stealth buys you weeks.

Use the world news feed as a timeline. When hospitals close, that’s my cue to pivot into lethal combos.

Dropping infectivity for boat routes is worth it—one ferry into New Zealand can save a stalled run.

Hard mode is all about timing: let the cure hit 60%, then unleash organ failure and watch the graph nosedive.