Hard Mode
Beat the game on normal difficulty to unlock hard mode.
Boss Challenges
| Unlockable |
How to Unlock |
| Easy Boss challenges |
Reach the Boss on the Easy difficulty. |
| Easy Mini Boss challenges |
Reach the Mini Boss on the Easy or Normal difficulty. |
| Hard Boss challenges |
Reach the Boss on the Hard difficulty. |
| Hard Mini Boss challenges |
Reach the Mini Boss on the Hard difficulty. |
| Normal Boss challenges |
Reach the Boss on the Normal difficulty. |
| Normal Mini Boss challenges |
Reach the Mini Boss on the Normal difficulty. |
Achievements
| Unlockable |
How to Unlock |
| BLUE BOMBER (10) |
Clear the game in under an hour. |
| DESTROYER (20) |
Defeat 1000 enemies. |
| HARD ROCK (20) |
Make it to a boss room without getting damaged. |
| HEADBANGING (20) |
Defeat the 8 bosses without your helmet on. |
| INVINCIBLE (30) |
Clear the game without dying. |
| MR.PERFECT (30) |
Clear the game without getting damaged. |
| NO COFFEE BREAK (10) |
Clear the game without using any energy, mystery, or weapon tanks. |
| SUPERHERO (10) |
Clear the game on HARD. |
| TENACIOUS (20) |
Clear the game without continuing. |
| TRUSTY SIDEARM (20) |
Defeat the 8 bosses with just your default weapon. |
| WHOMP WILY! (5) |
Clear the game once. |
| WORLD WARRIOR (5) |
Defeat one of every type of enemy. |
