So recently I'm getting into doing metal covers of pop songs and video game music.
But for some reason the only thing I can really think of to do for the rhythm is chugging palm muted chords.
I mean, it works, but there's gotta be something else out there right? Why can I not think of anything else to do? I know there's djent but that's fun for a few measures, not for a whole song.
Stacatto rhythms, pedal note riffs (see In Flames and Dark Tranquility), or parts which are essentially melodies/lead parts but used as rhythms (see most Prog metal)
I very rarely use power chords for anything.