I know Mad Stalker but frankly I never touched to Genocide.. I thought it was a simulator Mecha game (all in Japanese ...).. and it's an action game...
It sounds nice !! ?
Now regarding shmups on Amiga... There are a lot of gems (ah... SWIV, Xenon 1 and 2, Banshee,.....) ! ?
I still remember when i touched a C64 the first time : I played Raid over Moscow ! never saw a so hard and yet various shmups before ! ?
This game could be in your selection.....