Build 26399544

Enemy attacks, reworked

Enemy fire is now driven by difficulty tier. Normal, elite and boss encounters use the same rules, so the ramp from the first stages to the late ones is finally consistent.

What changed

- Tier scaling: each enemy's attack duration, fire rate, bullet count, spacing and bullet speed now scale from T1 to T8, so higher tiers fire more, faster and for longer.
- Bullet speed is a per-pattern value now, no longer a fixed constant, so different patterns get different pacing.
- A full pass over the roster: normal, elite and boss enemies were all rebased on the new numbers.
- Faster yellow-family enemies: their movement speed and bullet speed were raised, so they apply pressure earlier.
- Attack duration is capped at 10 seconds per pattern, keeping fights readable.

Notes

Existing saves, upgrades and achievements carry over. No progress reset.