On my best runs, with the best accidental match-ups, I’ve been the watering can guy. I’ll deploy alongside two far more talented players, and they’ll fix machinery and fight the hordes while I handle the watering. I’ll put out ground-based fires to allow for freedom of movement and to stop enemies being enraged by flames. I’ll put out any fires on my allies when they accidentally set light to themselves, so they don’t have to race back to the nearest shower block.
