These two popped in my head immediately.

Chrono Cross - Time's Scar

Tales of the Abyss - Meaning of Birth I've said it time and time again, but it's one of my favorite tropes. And when it's done really well, it just stands out.

From here it's iffy. Music is my favorite thing after gameplay and characters.

Dark Souls 3 - Soul of Cinder When the second phase starts at 2:28 and you hear those three piano notes and you almost die because you have to stop and listen.

Final Fantasy XIV - Dragonsong Heavensward is my favorite expansion so far and this is the theme.

Cyber Sleuth - Royal Knights Crusadermon is such a bitch in this game and it felt good to put her down. And there's the fight with Kentaurosmon chasing him down. And the fight with the giant Examon while the city is burning down behind you.

Cyber Sleuth - Yggdrasil Final Dungeon theme. It's one of those themes that keeps playing during fights too.

NieR: Automata - End of the Unknown I love the dungeon preceding this fight and the fight is great.

Devil May Cry 3 - Vergil Battle 1 "You sure know how to throw a party...no food, no drinks and the only babe just left."

Persona 5 - Whims of Fate I love this theme.

Phoenix Wright - Turnabout Sisters Ballad