This build requires lone wolf, and doesn't start to pay off until around level 10.
I thought of the build because I was playing a staff user that was Int based. The basic idea was to play them exactly like your standard 2hander, except they deal magic damage instead of melee. This allowed for magic based CC's like Mind control.
The problem was that I found the game to be skewed toward favoring physical damage, due to a generally higher amount of Magic armor amongst enemies (At least the strongest ones that you need to kill asap.). But I still really liked the staff idea, since it converts all Warfare skills to being Int based when you use a staff.
That was when I thought of the Wits idea. With lone wolf and 20 two-handed skill, your crit damage is pretty insane. I calculated out the difference, and there is only a very slight decrease in damage done when you raise Wits instead of your damage stat, once your crit damage is over the 250% range, because of the crit chance Wits provides.
There are three key things to this build. 1)Being human helps a lot because of the 5% crit chance. 2)Use flame runes in your necklace for crit chance, and get crit chance gear. 3)Save before looking at a merchant's wares - When you find one with a legendary two-hander, keep reloading until it has +20% crit chance.
With those three things, you will hit 100% crit chance (or 90%+) as early as when you first get to driftwood (The paladin leader usually sells legendary two handers. The nobleman on the second floor of the tavern often has legendary staves.). Of course, you can also use Spears since your damage is Wits based.
Once your two-handed skill is maxed, you raise scoundrel, not warfare. You only need warfare at 2.
With this build, you can switch between magic damage and physical damage on the fly. You may also want to get summoning to 3 for charm, since it pairs well with staff damage. Staves also are great for setting up water + lightning stuns. Also, get polymorph 1 once you can, for chicken and invis.
I realize that with Enrage, having your damage stat increased is far more beneficial, since you won't need crit. The problem is that it requires 2 AP (an entire attack), doesn't last, has a cooldown, requires a memory slot, and mutes you. You are also locked in to using only one damage type.
Now, you could even take this build a step further, and raise scoundrel instead of two-hander skill, and use ANY weapon type. The problem is that it doesn't work late game, because scoundrel will be maxed and you will have no way to raise damage without specializing in some manner. But it would make for a great mid-game build.
You could also make it a ranged build by going scoundrel + huntsman, and switching between ranged weapons and wands, using high ground.
Another benefit to the extremely high Wits, is you often get two turns back to back.
Of course, you could just do a summoner build instead, which is OP, and has the same kind of flexibility, since you can choose to make magic damage or physical damage summons. But all that summoning, and totem casting, and infusions just get tedious after the 500th fight. But it does make for a great build on your second character, if you do the Wits build.