Action huh... hmm in that case:
Fate Series - The animation is kinda on a different level than most, making the action scenes worth it even if u don’t enjoy the story. Involves a war with a select few people called Masters forming pacts and commanding heroes of the past. The victor of this war then has their wish granted.
Full Metal Alchemist Brotherhood - U may have seen this but it wasn’t mentioned so I’m just throwing this in, but I doubt it needs an introduction.
Parasyte the Maxim - Great action, story, music, has some good characters and also has a satisfying ending. Few people will say they didn’t enjoy this one, and if u like weird tentacle aliens that want to eat all of humanity then that’s even better.
Samurai Champloo - A bit older than the others but still good in its own right. Set in the Edo period and of Japan (Samurai era) great sword play scenes and a good story, with some comedy here and there.
Won’t throw too many on u so I’ll leave it at that.