Was gonna mention Dynasty Warriors, though it's already in the OP. I'd still recommend checking out the soundtracks of the other Dynasty Warriors games as well as the spinoffs. Dynasty Warriors 9's soundtrack in particular doesn't get enough love:
Super Solid Speedrun,
Cry & Slash,
Wall of Silence. Other picks:
Eve (from Dynasty Warriors 4),
Dual NRG (from Dynasty Warriors 5),
Trick and Magic (from Dynasty Warriors 7 XL)
Rule of Benkeism (from Warriors Orochi),
Fist of Love (from One Piece Pirate Warriors).
I'd also highly recommend looking up Demetori. It's not a game series, instead it's a Japanese music circle that does heavy metal covers of music from the Touhou Project series of games. Their music never has vocals and despite the original tracks they cover not being originally rock music, they do an amazing job of making them sound like they are.
Here's a compilation of some of their music.
Can't think of any other series that relies purely on rock music (that's not already in the OP) so here are some series that occasionally have rock / metal tracks. The King of Fighters series dips into rock occasionally. I haven't gotten around to listening to the whole series, though KOFXIV had a surprising amount of them. Some other choice picks:
Departure from South Town,
Belief,
Survivors Under The Sky
Yakuza also has some good rocking tracks when it decides to have them. Other picks:
Massive Fire,
Broken Police Radio,
Battle for the Dream,
Isolated Fight
As for specific tracks
(Don't know how I got into listening to this, as I've never actually played UNiEST.)
(From NeverDead. Don't bother with the rest of that game's music, this is the only standout track)
