Well, I've hit a wall again with this game and I'm not sure if I'll continue or not. 4-1 seems just downright cruel to me. Somehow, I have dark tendency on the level (maybe because of the number of times I've died there? I'm still not really sure how this works.) So I can get pretty far into the level, but those stupid manta ray things keep throwing crystals that take about 1/4 of my health bar. I've found some spots where I can pick them off here and there but they usually don't come close enough for me to hit them with my magic, but their crystals seem to have unlimited range. It doesn't help that the red glowing skeletons have shown up now and they can easily one-shot me, and take several good hits to kill.
I spent about 4 hours this morning trying to beat this level. I probably shouldn't have been keeping track, but I've lost about 100,000 souls in all. I'm soul level 45, so it's starting to take a massive investment in time now to level up even more. I'm not really sure how to take the world tendency here back to white, I've read that I need to invade other players worlds and help them kill bosses, but I'm not even sure how to do that. I've also read that this isn't even the hardest level, and the fact that I've played this game for nearly 35 hours now and have still only beaten 1-1, 1-2, 2-1, and 3-1 probably means that I'm actually too retarded / not good enough reflexes to play this game properly.