OT: As most people have already stated within this topic, he is quite idiotic to waste that many zeals (And so much experience) on just one skill.
I'm not sure if it's been done before, but a maxed combat character with 10HP would definitely be more unique then a level 35 character with 200M Attack experience..
He must play Soul Wars at least 16 hours a day from what I've read (~18K-19K zeals in 10 months).
Insane...I don't even want to bot an account to 20k seals lol. If I had 20k seals though, I'd get 99 slayer + summoning + prayer, that'd be pretty sick lol