This scenario is excellent. I played this last night as the OL and just missed out in killing the last guard. I lost my tiger after 4 turns but not before she killed 4 guards. The rest I killed using the Pict archers, but it required a few re-rolls. I missed out on killing the last guard because a Pict warrior was prevented from moving into his area by Balthus who was standing in the way. If the warrior was one space closer I would have a chance to kill the last guard and win the game.
One thing I noted was that Balthus' archery skills are great. He killed a large number of Picts and even though I managed to reinforce a few times. It took a while for them to move into the centre where the guard was located.
The tiger was killed by Conan and Slasher. Conan did 5 damage and Slasher did the rest. That dog is tough.
As OL I will use the tiger as much as possible early, because the heroes will probably try and kill her quickly. She is the only creature that can easily kill the guards, the picts require good dice rolls and the use of re-rolls. The archers should be used to kill the guards in the middle of the village and the other Picts used to kill guards closer to the edge. I will move guards toward the centre as soon as possible.