Actually, Cocytus Reverse has a ride chant and just like with Nightstorm, it's an essay. It's also a crime that Amon and Hyakki don't have animations. Leopold and Maelstrom got it even worse since they didn't put in a reversed Leon and Chris skin, so no ride chants either.
There was that aichi vs kamui reverse fight way back season 3 original series. The crossbreak ride bgm scene was probably the best ost, I thought I am gonna see it, sad
There is no gacha so you can literally grind your way into get playsets. Unfortunately, there is no gacha so you can't luck your way into getting playsets. You're gonna need 13 000 Cravats to get everything at 4 copies regular rarity. SP versions cost 3x as much.
To answer the question, medium - hard. Medium if you have the capacity to earn cravats, hard if you barely play. Very hard if you don't have prior musketeers.