Level 222 solution

Solver-verified route

1. Place Shooter 1 in lane 1.
2. Place Shooter 2 in lane 1, then wait ~9 ticks.
3. Place Shooter 3 in lane 1, then wait ~18 ticks.
4. Place Shooter 4 in lane 1, then wait ~13 ticks.
5. Place Shooter 5 in lane 1, then wait ~32 ticks.
6. Place Shooter 6 in lane 1, then wait ~39 ticks.
7. Relaunch Shooter 6 in lane 1, then wait ~48 ticks.
8. Relaunch Shooter 6 in lane 1, then wait ~48 ticks.
9. Place Shooter 7 in lane 1, then wait ~27 ticks.
10. Place Shooter 8 in lane 1, then wait ~18 ticks.
11. Place Shooter 9 in lane 1, then wait ~18 ticks.

Flow mode clears this board in 54 shots with 2 relaunches.