Angel at War

You control an angel, moving her left and right across the screen to fend off waves of incoming enemies. The main goal is to survive as long as possible, shooting projectiles at monsters that approach from both sides. You have to manage your positioning carefully, dodging enemy fire while returning your own. The pacing is constant, with little respite between attacks, and the difficulty builds steadily as more foes appear. It feels like a tense, focused scramble to hold your ground.