---
id: GAL-41
title: Award bonus points for clearing the special stage
status: Todo
parent: GAL-38
labels: [gameplay, advanced-mechanics]
---

# GAL-41: Award bonus points for destroying all enemies in the stage

Award bonus points for destroying all enemies in the stage.

## Acceptance criteria

- [ ] Bonus is awarded **only** when every enemy spawned during the special stage is destroyed before the stage ends.
- [ ] Partial clears award nothing (no proportional credit).
- [ ] Bonus value is configurable per stage via `StageConfig` (or equivalent), defaulting to a Galaga-style 10000.
- [ ] Bonus applies to `Score` resource on stage transition, not on the last kill (so final HUD reads cleanly).
- [ ] Visible feedback (text overlay or window title) so player knows they earned the bonus.

## Integration test hints

- World where `is_special_stage(current) == true` with N enemies; despawn all N via simulated bullet hits; advance to next stage; assert `Score` increased by exactly the configured bonus.
- Negative case: leave 1 enemy alive; advance stage; assert `Score` unchanged by the bonus mechanism.
- Property-style: vary N in {1, 5, 20}; assert bonus paid once, regardless of N.