Soooo, who else here has solo-beaten Parallel Quest number 47, 'Super-Super Ultimate Series of Battles'? It's the one you get from Kid Trunks when you happen to find him near the Tournament Registration area, and dear GOD is it an absolute nightmare, for me at least. Finally beat it, and so freaking jubilant I had to come here to bemoan what a pain it was TO beat. It actually serves to highlight a lot of the problems the game's design has, especially the nature of Super Saiyans and fighting multiple opponents.
For those who haven't played, it pretty much goes like this (spoiler-tastic, for those who prefer going into these challenges blind

keep in mind that since you originally get it from Kid Trunks, you can't (near as I can tell?) opt for a team, not until you replay it later, so it's just you on your lonesome. You begin in the Caves fighting against Piccolo, Tien and Yamcha, all low level, and all pretty easy to take on; I literally come out of it without a scratch, thanks to my Z-Soul's regeneration perk. Once 2 out of 3 are down, Krillin and Android 18 join in, keeping it 3 to 1, but if you're VERY quick, you can knock out the third warrior before they arrive, meaning you only have to deal with them 2 to 1. Again, that segment is pretty easy to blast through when you're at max level.
Once you've beaten them, you move on to the next zone, the Glacier, where Videl and Hercule are waiting for you. They are BEYOND easy to take down, with Hercule folding after only a few hits, and Videl not able to do much else. Buu arrives soon after the fight begins however, and while he is a bit of a damage sponge, with a double-health bar, he's straightforward enough to take down.
It's at this point that it starts getting... tricky. >.>
After Buu is down, Vegeta and Kid Trunks show up, both in Super Saiyan form permanently. Anyone who's dealt with Ultimate-loving SS characters knows how irritating it is, but then, before you can even do much damage to either of them, ADULT Trunks also shows up, (in Super Saiyan form,) turning it into a 3-on-1 Super Saiyan smackdown. They are all highly aggressive, opting for swarming tactics and offering very little breathing room, and during a couple of efforts I'd get chain-comboed by all three of them to the point where three quarters of my health was gone before I could even disengage. To top it off, Vegeta has that red-aura explosion move, the one that doesn't do much damage but can (apparently) be used mid-combo to force an enemy back, and can INTERRUPT someone's attempt to use an Ultimate Move. Oh, and by the way, both Vegeta and Trunks have double-full health bars.
Once you've defeated all three of THEM, you move to an oddly empty Space level, then directly onto the Kai World level. There, Super Saiyans Goten and Goku, and Ultimate Form Gohan, are all waiting for you. This actually ends up being even worse than the previous fight, because it's entirely possible to get comboed, then hit by Goku's Super Kamehameha, and then hit by GOHAN'S Super Kahehameha before the first one has even ended. Even popping a healing item is difficult, because you can't use them if you're being knocked down or hit, and finding even a split second of peace to use one is highly tricky. Oh, and Gohan has a double-full health bar, though curiously Goku did not...
...until you realize why he didn't. Because when, FINALLY, you take down all three of those Super Saiyans.... at which point Goku gets back up and goes Super Saiyan 3, (with a double health bar this time!) and you have to take him out next. Especially irritating for a mainly physical guy like me, as he had a similar aura-attack that kept breaking my combo attempts and forcing me back.
Oh, and you have only fifteen minutes to defeat all fourteen characters. (Fifteen if you count Goku's revival.) The second to last time I tried this level (basically, the time before I finally beat it,) I lost not because I died, but because I ran out of time, meaning I had to run the gauntlet even FASTER than last time to seize victory. x3