In the bottomless cave, you are trapped by the enemy, and at first you are just an ordinary fighter.
You need to beat the enemy all the time to escape the cave.
Facing the intensive attack of the enemys barrage, how do you avoid the enemys barrage attack while destroying the enemy?
Game features:
After destroying the enemy in each level, the fighter can strengthen a part, match it reasonably, and destroy the enemy.
The shield behind the fighter plane can absorb the enemys attack and is good at using this skill.