ACHIEVEMENT - HOW TO UNLOCK Complete Level 1 (10 points) - Complete level 1. Complete Level 2 (15 points) - Complete level 2. Complete Level 3 (15 points) - Complete level 3. Complete Level 4 (20 points) - Complete level 4. Complete Level 5 (20 points) - Complete level 5. Complete Base Level (25 points) - Destroy the enemy base. Refueling (10 points) - Destroy 10 or more fuel containers on level 1. Co-op Brilliance (20 points) - Obtain a score of 30,000 or more while playing an Xbox Live co-op game. It's a Mystery (15 points) - Destroy 3 or more mystery objects. Bombing Run (10 points) - Destroy 30 enemies without using your forward shooting weapon. Sharp Shooter (10 points) - Destroy 30 enemies without once dropping a bomb Perfection (30 points) - Beat the game without losing any lives.