This was my favorite game for a very long time, I just don't know if I have the willpower to get back into it again honestly. On the plus side, the game is very solo friendly if you just want to give it a shot to see if you like it. I think there's maybe 1-2 optional missions that require a group for some button pushing things, and the final boss of the hardest difficulty can be a bit of a PITA to solo, but by then I think you'll know if you like the game.
I still remember a few bosses in this game that gave me the fits back when I played, SO HARD T_T but so fun.