I've lost the template to make new headers for the guide, so I'll either have to find them or spend an hour remaking them all so I'll just type it out here, even though this is something that if you really needed to know ASAP, you could've forwarded it to Power Type - ggFTW MMORPG and MMO Gamer Community
So you'll want your standard AP helm, if you're not using a 3s Ult Steel Helmet I suggest you get one since it can last well into 3rd job because you have so many AP buffs it really doesn't matter.
You'll want an HP shield and a pet with decent HP/AP, and if you can get some HV that'll work as well. You DO NOT want to go and stack attribute because DON IS VERY RESISTANT. You'll basically be spamming burning rave, running away from beserk, and pot spamming to hell and back.
If you were silly enough to pick a 4114 build and can't carry enough 1k pots (because YOU WILL DIE if you're using 500 HP pots), my suggestion is to let off as much weight as possible, take HP pots to 89% weight, NO MP POTS, and just run away from Don and sleep to regen mana (note: I also suggest this to people with builds with more than 1 in sense).
The process will be slow, but that's the Don fight for you. A sprint is always suggested. If you can't get 7k+ HP you are more or less guaranteed to be one shotted by berserk, and if you are 4114 and you manage to survive an electro-berserk, your pots will probably be so low you'll have to try again.
The fight is pot spamming/playing it safe. Whacking the hell outta Don does not work, but I got by with just burning rave, so so can you.
As an aside, I REALLY don't appreciate being told how to run by guide, and I was actually really offended by how casually you tossed it out like you don't realize how much work keeping up with guides takes, especially two. Based on my MANY linkbacks, it's clear that I probably am in charge of the best Diva and Champion guide for eTO, I know what I'm doing. If I needed to update for Season 2, I would have, and the tone I got out of your last post was "so how about that Don?" also offended me.
I've maintained this guide for two years now. Be more cognizant, please. My guide is here to serve, and I would've been fine with writing a Don guide eventually, but if it was so urgent you really should have referred to the power type section, and you DID NOT have to request it. TWICE. I don't on a whim drop my life to add something immediately.
and I'm not trying to sound mean, I like knowing I'm helping out the community, but I saw your request the first time, and when people request something, I notice and add it. I'm not your personal guide writer. I've been asked the same question REPEATEDLY, so I made a FAQ section and reserved the right to not answer, because I've already answered it 5 times over. I have a life to juggle orz