Allright, here is what I'm doing.
I also use random numbers to determine what actions the enemies are doing, but before generating the number, I begin by calculating the present situation, mostly by using coordinates and remaining health.
I calculate the total distance in pixels between the player and the enemy. To do this, I have a rule on the player that sets two global counters, his x coordinate and his y coordinate. This, way, I can easily calculate the distance into the enemy rules.
When I know the relative position of the player I use only the relevant actions in my random numbers. So, if the player is very far, it is ineffective, for example, to launch a flurry of claw attacks that hit only in close range. You can calculate different zones like this to make your enemy seem more intelligent by doing more effective actions, distance wise.
Also, it would be strange for the enemy to be very tired and only stay there and pant if he hasn't done anything before. So you could do a different number of things for that. In my game, some enemies get "tired" too. I've got a parameter in each enemy that is called "WaitCounter". When the enemy is taking an action (attacking, jumping, charging, etc) I set the WaitCounter to a value that represents how tired it should be after performing such an action. So, when the action is over, before I go to randomize the next action, I verify if there is a value in the "WaitCounter". If yes, I go straight to the "tired" action. Or course, some action won't make the enemy tired at all. So, the enemy can perform a variety of short and fast actions and then become tired only after a huge effort.
If you want to twist this a little, you can set the "WaitCounter" value in relation with the remaining health of the enemy. If he is near death, he becomes tired more often. Of course, this boss being a werewolf and all, he could become enraged when he is near death and not become tired at all.
Another suggestion, randomize the tired amount you put into the "WaitCounter". Make it a random of big numbers for a demanding action, and very low numbers for an easy action.
By calculating to distance between the enemy and the player, you can perform more accurate jumps too.
Also related to the remaining health of the enemy, you can change his attacks depending of his remaining health. When he is desperate, he could launch more terrible attacks. When he his fresh and confident, he could be more "playful" and taunt the player for example.
Does that help?
