@Black_Knight_00: I played it on PC, I would say windows 98 and I played it while I was child, so I would say that years were 2000ish.

Also searching one old game what I want to remember.

It was 2d platformer shooter, where you run left to right and shoot. I dont remember how, but you could get different minions who had their own weapons and they followed you and mimicked your every move. When you jumped, they jumped, if you shot, they shot one by one. There was also huge bosses who u had to defeat. I remember really well normal gun, grenade throwers and lategame had laser shooters. If I remember well, it also started with kinda huge boss who tried to kill you. I remember there was somebody huge but I dont remember why.

I hope somebody knows what I am talking about.