Söldner-X is one of the best and most underrated shmups ever

Everyone should play it, the movement feels so good, the game has some of the best designed bullet patterns ever and level design is great. Everyone should play it, it's masterpiece.

Only shmup that is even better is Sine Mora. Sine Mora is incredible and the devs even listened to the shmup fanbase so they could make the best game ever