For DD, there is an exploit which can make any fight easy for a warrior. If you drink a shadow potion and use your spin attack near (but not directly on) a creature, you will hit it without turning visible (ie they will not hit back). IIRC, this even works when you are Blind (though you can also just wait for the effect to wear off).
With BD, I was saving up my skill points because I wasn't sure if I was going to stick with a sword for my DK or not. After that there was a bit of complaining in the forum about the lack of skill points, so I decided to use less.
Near the end of the game my DK had 21 spare skill points. He had 2 in individual healing (handy at the start of the game to top off health after a fight, rather than using potions), 2 in Sharpen, 5 in Repair and 3 in 2-handed slashing expertise. My hero had 16 spare skill points, using 2 for individual healing, 5 for Identify Equipment and 10 for Crossbow Expertise (7 of that in Reload Time).
For the last couple of fights I used my DK's spare skill points to upgrade the skeleton summoning doll (and gave it a crossbow). My hero switched to a bow, unlearned the crossbow skill and invested more skill points in bow expertise.
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