Ys: The Oath in Felghana - Boss Rush Nightmare + Secret Boss

I've included the secret boss when you beat the boss rush on nightmare. I hate it when skills mean nothing on some of the bosses that requires some good RNG to beat it.
Finally, I can move on from this game, 4/8 Ys Done. Half way more to go!
►Timestamps◄
Dularn, The Creeping Shadow : 0:00
Ellefale, The Azure Queen of Death : 1:36
Chester Stoddart, The Black-Hearted White Knight : 3:46
Guilen, The Fire Eater : 6:27
Gyalva, Lord of the Blazing Prison : 11:32
Istersiva, The Crystalline Entity : 21:13
Ligaty, The Three Flying Succubi : 24:39 (There's a fail in the early run on this boss, my bad)
Gildias, Guardian of the Icy Depths : 27:35
Death Faleon, The Ever-Whirling Assassin : 31:43
Zellfel Zam Schultiger, The Savage Mongrel : 33:20
Zirduros, The Clockwork Cannon : 35:57
Chester Stoddart, The Vengeful White Knight : 38:03
Dularn, The Tragic Loyalist : 42:36
Garland, The Dark Bishop : 45:27
Galbalan, Sinister Marauder From Afar : 48:45
Berhardt, The Legend Himself : 53:34

[@MozartTurbo]

Amazing bro! You rock

[@emilyding2496]

Not sure if I remeber the final boss being the legend himself