This Nemesis 3 stage is the first stage of the game, and heavily influenced by Gradius II's First Stage.
Nemesis 3's first stage has no level intro, directly starting the level. At the beginning, a swarm of Firebirds appear, and fly in waves throughout the whole stage. These enemies are the only enemies in the level. After a few screens, many suns appear, with small solar flares that can make life difficult for a player. A short while later, the suns also start firing aimed rocks at the player, from their solar flares. At the end, a large Phoenix called Geezer Butler acts as a boss.