Use main route to solve one real in-game task.
When the lake stops shrinking fast enough, finish one clean bucket loop, spot the slowest step, and spend your next tokens there before doing anything else. If you cannot tell whether filling, draining, or carrying got faster, the route is too scattered.
- Fill until the lake route moves faster.
- Drain until the lake route moves faster.
- Upgrade until the lake route moves faster.
- Spend tokens until the lake route moves faster.