Bonuses:
❤️ - Adds one life (up to 5 lives), grants 270 points.
✨ - Enables unlimited shooting with red bullets until the player loses a life.
🐽 - Destroys 25% of enemies on screen, grants 50 points per enemy.
🐢 - Grants invincibility for 45 seconds.
🌪 - Destroys 10% of enemies on screen, grants 50 points per enemy.
Enemies:
🪰, 🪲, 🪳, 🐞, 🐝, 🦜 - Basic enemies, move in formation and may dive.
🧚♀️, 🧚♂️, 🧚 - Appear from level 2, faster diving and shoot yellow bullets when diving.
🦋 - Appears from level 6, splits into three when diving, shoots yellow bullets.
☄️ - Meteors (from level 6), move diagonally, destroyed by player bullets.
Bosses (every 5 levels): ☃️, 👾, 🦜 - Move horizontally, stop periodically to spawn enemies, require multiple hits to defeat.