I've been passing through a problem in Mystery Dungeon Explores of Darkness. Some of my partners aren't attacking, and I set "Goe on Foes" as the Tactics. Right in the first floor it can be noticed that even with full HP and PP on every move the Pokemon doesn't attack. I wanted to know why? A glitch?
Can your partner reach? If the Pokemon you're attacking is in front of you and your partner is behind you they can't reach them to attack because you are in there way, you have to have them stand beside you so they can hit them.