The scenario was called "To the Green Fields Beyond," a custom "hold the pass" variation from the Studio Tomahawk forum. The pass between the hills and rocks is open ground, but impassable for 6" on both sides. Beyond that, the hills and trees are considered rough going. The faction that gets the most figures (counted by victory points) on the other side of the board after eight turns wins.
Here's the board after deployment. On the left the Irish have a unit of war dogs, six Fianna with Dane axes, two Curaidh, the warlord and a unit of eight warriors. On the right, beginning closest to the camera, my Norse Gaels are fielding the warlord, four hearthguard with Dane axes, twelve slaves with javelins, four Vikings and unit of eight warriors.
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The Irish move first, and their warlord, Fianna and two Curaidh approach the pass. My levy take two moves, fire their javelins...
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Fortunately for me that meant my Warlord was able to cross the treeline uncontested. For the Irish to win, their player needed to take out both remaining Vikings on the right with a single of warrior and make it back through the trees. He killed one, but failed to cross to the other side in time.
Final victory points: Norse Gaels 8, Irish 7 1/2.
With a Viking army, you have the option (with some figure variations) of running them as traditional Vikings, Jomsvikings or Norse Gaels. I like the offensive power of the Vikings, but find the Jomsvikings too limited, perhaps requiring too much of a long game to build their rage. I want to like the Norse Gaels but, I have to say I am disappointed. All five of my challenges failed and on three of them I was rolling more dice than my opponent. My most useful unit turned out to be the Levy and that is without the Norse Gaels having a single shooting ability on on the battle board. If you're on good terms with the dice gods, this may be your faction; I think I will stick with their more predictable Viking cousins.