Odd that you'd go with special moves when Absol is very much a physical attacker...
anywho, there are a couple moves that I have an issue with... one is Soul Reap. I've never liked one-hit-KO moves, and the fact that it heals the user if it hits. The other one is Mind Crush... I only really have an issue with its accuracy. Perhaps 80% accuracy would be a little better?