klasbran: Interesting, I don't think I was aware of that.
And I'm assuming this 40 hr character used this "shortcut"? I'm not a strong gamer, but I can't fathom building a 40 hour character starting in Gipath and working your way all the way up.
That player has "completed" MP by different characters and by different approaches. The most "safe" and reliable was tankomage, 20/20/35 in primary stats. Your first experience with MP will take much longer than 40 hours, MP has much steeper difficulty curve, and there will be normal monsters who are much stronger than final boss in SP. Recommended order of taking skills is such (I am not sure about their proper English names as I play Russian version of the game):
1. Skill which increases your maximum Stamina (blue bar). All 3 Ranks.
2. Skill which increases your Stamina regen. All 3 Ranks.
3. Skill which increases your maximum Health. All 3 Ranks.
4. Thunder Magic skill. All 3 Ranks.
5. Acid Magic skill. All 3 Ranks.
6. Mind (3rd primary Stat). All 3 Ranks.
It is recommended to focus on making powerful Acid and Thunder nukes as there is no other way to damage top-end monsters. It is recommended to make "batteries" - healing spell with runes in all your armor pieces for autocast setup. Also you will have to forget about running because you will be encumbered most of the time. Also never auto-attack as tankomage because your blue bar regenerates when you stand still. But it is recommended to always wear sword because it provides additional bonus to Defense.
Keep in mind that unlike in SP, you aren't that much limited by EXP (though you still need to plan your skill progress carefully). Make a character, toy around with various stuff, spells, approaches. If you play long enough, eventually game will overflow experience cost of skills into negatives and eventually all skills will start costing 0 EXP, so you can eventually learn all skills.