World Boss: One Shared Health Bar, Everyone Attacks
One shared health bar and every player attacking at once: share the fight, share the loot.
The World Boss is a powerful NPC that shows up at random moments and can be fought by everyone at the same time. There is only one shared health bar: anyone with a weapon equipped can join in for as long as the boss is active.
Attacking
Every attack uses your equipped weapon and costs bullets, just like a normal attack. The heavier your weapon, the more damage you deal. There is a short cooldown between attacks, and if your health runs out you first have to recover in the Hospital before you can join again.
Timing = more damage
With every hit you briefly charge a strike zone: release at exactly the right moment and you deal a lot more damage. Miss the zone and your hit is weaker. The more often you fight, the better you get the rhythm.
No risk
Fighting the World Boss never costs you health, not even when a hit fails. So you can always join in, no matter how much HP you have.
Sharing the loot
Once the boss is defeated, the loot is split in proportion to the damage everyone dealt: the more damage you did, the bigger your share of the cash and XP. If the boss escapes (the health bar does not reach zero in time), there is nothing to share. The more players join in, the bigger the chance it goes down.