Oh yes, for sure. If you got there all by yourself, I'm impressed. I would advise bringing along one or two other friends at least level 22. Also, if you have some crowns, you can buy some henchmen from the crowns shop.
Make sure to bring treasure card shields for the boss's school. Also, you can watch Jack Frost's video of him soloing the Tomb if the Beguiler at a very low level. If you still can't do it, I'll be happy to help you on my level 56 Death. If you want to meet, just tell me!
I'm trying to defeat the Soulkeeper in the Chamber of Fire but I can't seem to do it alone, and there is never anyone there to help.
Oh yeah, I remember having lots of trouble with that boss when I had the quest. Try bringing shields(probably TC's) for his school(Ice I think it was? ) like Leesha Starforge said. Also, pack plenty of heals, like Fairy and Sprite(if you've trained into the life school). If you have one, try summoning a minion as well, or even a henchman from the Crowns shop(they don't cost that much). If you still have trouble, try bringing a friend with you. (That's how I managed to beat the boss). You could also try arranging a meet-up, maybe on the message boards or Central?