Final Fantasy V Pixel Remaster - Omega (Level 35)
3NOTE. I'm sorry about the many pauses. I saved this clip through the PS5 share function only after beating this, and I was pretty tired
I ended up beating one of the hardest optional bosses in the Final Fantasy series at a relatively low level, and I thought it was a good idea uploading it.
You can run into this boss during the final dungeon. He'll destroy your party if you're not well equipped, and this is also a very luck based fight. The most devastating attack is Encircle which permanently erases a party member. My strategy was to have 2 characters use Thundaga Spellblade and then Rapid Fire, one with White and Time magic, and one with White and Blue Magic (with Mighty Guard). Make sure you have shields for everyone, and anything that nullifies or absorbs fire attacks, so you don't die from Atomic Ray.
The other optional boss Shinryu is way easier than this one.
In any case I beat FF5 for the first time a few days ago on the Pixel Remaster version. I really liked the job system, even though the story isn't as good.