My mom and I had lunch at Akershus in November and we had sort of mixed opinions about it. I loved the cold buffet! Mom, not so much. Buffet had smoked salmon, two kinds of herring (one pickled, one in a tomato sauce) that were delicious, some cold cuts, a couple of different kinds of cheese (muenster and maybe swiss? definitely try the caramel cheese!) and lots of yummy salads: cucumber salad, beet salad, potato salad.
Entrees were disappointing, though. I had the venison sausage with some kind of bean stew, and I thought it tasted like canned hotdogs and baked beans. Just... oddly seasoned. (And I'm a pretty adventurous eater, so it wasn't just that I thought the flavors were new or different... I just thought they were boring and yucky.) Mom got the kjottkake and we both thought that was also sort of disappointing. I wound up just getting a second plate of salmon and herring and salads from the buffet, and left full and happy.
Desserts were awesome! The chocolate mousse cake and the rice pudding with strawberries were both worthy of a good plate-licking. Unfortunately, the promised lingonberry cheesecake was replaced with an apple pie dish that was just good, but not great.
I'd go back for the buffet and the desserts... but if the idea of the items on the buffet don't appeal to you, you might want to consider skipping it. I think it's worth a try, though!