Cave Warplane

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 enemy's barrage, how do you avoid the enemy's 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 enemy's attack and is good at using this skill.