Finally did it. Forget all that other shit I said before. If you want to make it fairly simple to get to greater than level 200 with Toastie, just take the Divine Bloodline (IX) Arcana at the start. Then, if you get hit (which you will), as long as it doesn't outright kill you and as long as you have enough time to let the life refill before you get hit again, then every time you get hit, you gain maximum health. You still don't want to play carelessly, and you still want to go for good weapons/passives, but gaining health every time you get hit goes a long way toward mitigating Toastie's shortcomings, especially since the longer you play as him and the more you get hit, the less likely it is that you'll outright die, which seems ass-backwards, of course, but it is what it is. Granted, the Divine Bloodline arcana wasn't in the game when I tried getting to >200 with Toastie before, but whatever. And the Victory Sword was super helpful, too, especially once I got the Sole Solution to go along with it.
Anyway, I made it to 40 minutes (normal speed, not "Hurry") on Gallo Tower before I just gave up and quit. I think that all those Deaths would have eventually killed Toastie, but judging by how slowly his life bar was going down, it would have taken probably several real-world hours for it to finally happen. And that's assuming that I'd just stood there and let it happen, rather than triggering Gold Fever and refilling my life with coins, since I took Disco of Gold (XV) as my final Arcana pick. I also have no idea if I managed to kill any of the Deaths in turn, since I could hardly tell what the fuck was going on by the end with all the screen clutter.
Anyway, here are the obligatory screenshots, which show what all weapons/passives I took, with links because I know Google Photos will shit the (em)bed, sooner than later. As you can see there, I didn't even bother to take the Laurel or the TiragisĂș or the Awake (IV) arcana. Also, maxed out Torrona's Box and Skull O'Maniac didn't cause much of an issue. The only reason I didn't max out the Gold Ring and the Metaglio Right was due to running out of enemies to kill at the 30 minute mark, as they were the last items I picked up (even though I didn't really have a reason to do so, in the first place). Anyway, despite all of that, I never died once.

Preemptive "Fuck you, Google Photos" link.

Preemptive "Fuck you, Google Photos" link.

Preemptive "Fuck you, Google Photos" link.
Anyway, I made it to 40 minutes (normal speed, not "Hurry") on Gallo Tower before I just gave up and quit. I think that all those Deaths would have eventually killed Toastie, but judging by how slowly his life bar was going down, it would have taken probably several real-world hours for it to finally happen. And that's assuming that I'd just stood there and let it happen, rather than triggering Gold Fever and refilling my life with coins, since I took Disco of Gold (XV) as my final Arcana pick. I also have no idea if I managed to kill any of the Deaths in turn, since I could hardly tell what the fuck was going on by the end with all the screen clutter.
Anyway, here are the obligatory screenshots, which show what all weapons/passives I took, with links because I know Google Photos will shit the (em)bed, sooner than later. As you can see there, I didn't even bother to take the Laurel or the TiragisĂș or the Awake (IV) arcana. Also, maxed out Torrona's Box and Skull O'Maniac didn't cause much of an issue. The only reason I didn't max out the Gold Ring and the Metaglio Right was due to running out of enemies to kill at the 30 minute mark, as they were the last items I picked up (even though I didn't really have a reason to do so, in the first place). Anyway, despite all of that, I never died once.
Preemptive "Fuck you, Google Photos" link.
Preemptive "Fuck you, Google Photos" link.
Preemptive "Fuck you, Google Photos" link.