Bring the big guns
Heavy hitters, balanced firepower or rapid-fire troublemakers. Pick a cannon before the first wave, then build your line as the siege grows.

Big guns. Bigger decisions.
The gate is shut. The cannons are loaded. Someone outside clearly missed the visiting hours. What the Fort turns a quiet forest clearing into a standoff between your growing defence and a very persistent procession of trouble.
Pick your cannons, send in the next wave and watch the sparks fly. Survive, and another decision awaits: add more firepower, patch up the gate, or cash out while it’s still standing.
Every new wave puts your stake and uncollected reward back on the line. If the gate falls, they’re gone. Hold out through the final wave and your reward is collected automatically. Until then, a dignified retreat is always on the table.
Heavy hitters, balanced firepower or rapid-fire troublemakers. Pick a cannon before the first wave, then build your line as the siege grows.
Between waves, add a cannon or repair your battered gate. More firepower is tempting. So is having a gate left to defend.
Cash out after a successful defence, or face another wave for a larger offer. A breach ends the round with no return; surviving the final wave collects your reward.