Revivers

• Move. That's all: your weapons fire themselves. WASD or arrows, a gamepad, or drag a thumb.
• Level up together. Gems are shared XP. At each level, pick an upgrade (1–3, tap, or X/Y/B). Two maxed upgrades can evolve.
• Watch for warnings. Red lanes, filling circles and glows say where a blow will land. Step out.
• Revive. At zero you go down. A teammate who stands by you for 3 s gets you up.
• Rally. When gold circles appear, get everyone in: it heals all and brings back the fallen.