The highest melee dps in the game is in fact a warrior with the second build and dex at 36 for Dual Weapon Mastery, although it won't be running dual fullsize. But the other non-trivial factor is that Rose's Thorn has such good enchantments that it is always one of the best weapons for nearly any dual wield setup with respect to dps. If you move to two fullsize, the attack speed drops a bit more reducing auto attack dps. This is because the full size weapons have better base damage and attribute modifiers, and when you are dual wielding the difference in attack speed between two daggers and dagger - fullsize isn't that great. On warrior or rogue, highest dps is achieved with dagger - sword/axe as opposed to dagger - dagger. Going to go into more detail for the second build. It is still survivable since it has high armor rating and some defense. The second build will do more damage, and should ideally run a dagger and sword/axe for the best damage.

High defense and high armor rating makes it very hard to kill.

The first build should run dual daggers, and has the advantage of very high defense. Two basic ways to build it, either STR to 39 or so for the heaviest armors and everything else Dex, or 24-36 Dex and the rest into STR.

Best warrior build dragon age origins