Very interesting timeline. I love a good Cold War-timeline , and I'm very glad that you are writing one. I've thought about it myself, several times. But I've never felt confident enough to try, or felt I had the time necessary to invest in making it realistic. So please keep it up!
I feel the question of the level of destruction after a nuclear war in the 80s is difficult. I remember that we back then always thought that the entire globe would be destroyed, should the war come. That the superpowers had enough nuclear weapons to destroy all life on Earth several times over.
But when you start to look into it, a different picture emerges. First it's the question of how much the nuclear powers manages to destroy of eachothers weapons. I.e. how much is actually left to use? Then it's the question of the purpose of the targeting: What to achieve with the nuclear weapons? As far I know, both sides tried to plan for a nuclear exchange with military, strategic aims. Not just throwing the weapons away on general mayhem. Terror bombing of civilial population centers is of course useful to a certain degree, but only as a means to and end: "encouraging" the enemy to surrender. But mostly, the threat of terror bombing remains just a threat, because in reality you don't have enough bombs and you don't want to repeat the mistake the Germans did in the Battle of Britain: bombing cities before you are certain that your military aims are secured. Another problem with bombing cities is also the fact that you want the enemy to be able to surrender. If you decapitate the enemy by blasting all government agencies, you've got nobody left to say "I surrender".
If you want to destroy the military capacity of the enemy, you have to choose your targets well: vehicles, ships, tanks, planes, of course. But priority would be on command and control, important transportation hubs, oil (like Johansen rigthly opens with a Soviet attack on Norwegian oil platforms), etc. But these are difficult to take out with nuclear weapons because they'r situated in mountain (protected after the NATO-standard for rock facilities from the 1956-direktive: to be able to withstand a 100 kt direct hit) or by just being very robust installations (like major bridges). To take these our, you need ground burst or even bunker busters. And they release relatively little radiation and create relatively little direct destruction in the surroundings. And you need several weapons to be able to take out key installations like Kolsås or Reitan.
Additionally, Norway is a difficult country to hurt, just because of geography, weather and low population density. Like Johanson mentions about Bergen: the winds take the radiation to sea. It's always windy at the coast. High pressure weather means easterly winds, from land to sea. Low pressure means southwest winds, taking the radiation more inland. But at the same time, low pressure means less radiation spread. So, unless the Soviet Union have been very lucky and been able to avoid extensive destruction of its nuclear capability, it will not have enough nuclear weapons to really hurt Norway outside of some key areas like Bodø and other important towns being situated directly besides key military bases. I think Johansons 2 million dead sounds about right. Thats from Bodø, the parts of Bergen near Haakonsvern, Stavanger and Oslo (both cities are somewhat easier to terrorbomb because of more open terrain and for Oslo much less wind, so the Soviets get "more bang for the buck" + Kolsås is near to Oslo and Jåttå/Sola airport is close to Stavanger). And several smaller towns like Andøya, Stjørdal (Værnes airport), Moss (Rygge Airport), Ørland, etc.
But the other half of Norwegians live in areas which are either militarily unimportant or just to spread out. By 1984 the government had managed to somewhat stem the tide of centralisation. Since 1950 all political parties had tried to actively promote decentralisation. A mixed success, but still we were more decentrallised than most other European nations. From the mid-1990s the centralisation-trend picked markedly up. But in 1984 we were still quite well spread out. So you'll get plenty of survivors even if Norway was considered one of the prime Soviet targets, as the Soviet gateway to the Atlantic.
The mountains will also hide many of us very well. F.ex is Bergen very difficult to destroy. A bomb on Haakonsvern could obliterate downtown, at the same time leaving many of the suburbs almost unaffected because of being hidden on the other side of quite tall mountains.
Since the powerstations are also hidden in mountains, and spread out in huge numbers over the entire country, I think the Soviets will not spare many bombs on those. Since any proper attempt to cripple our hydroelectric supply will demand so very many nuclear bombs, it little use to try. You can't even do a decent dent in the number of dams, as we favour very any smaller dams over a few large ones. In 1984 you could probably cripple the power lines to many towns, since we didn't yet have the amount of back up as we do today. But even that is difficult many places. The easiest places to cripple the power lines to, is the Oslo-area. Which would be destroyed anyway.
Would the living envy the dead: Well, I think most of us have such large survival instinct that we very seldom really wish we were dead. Even if we may say we do.
But still, the living will be in for a tough ride. The surviving communities will be scattered and somewhat isolated. With Oslo gone, long distance communications will be difficult, so communities will be left to fend for themselves. Since a modern society depends on regular trade, it'll be a real challenge. Important everyday items will suddenly disappear (like toiletpaper

). But except for one thing, the survivors will have a much easier time than in Finland (as I read another good P&S timeline): Food.
Norway is very long from self sufficient regarding food. Especially grains is mostly imported. Farmlands may be converted into grain. But our climate does not make it possible to grow enough grains, even with a reduced population. And the grains which we can grow, is mainly the tougher sorts like oat and barley, used for animal fodder. Before 1900 that was ok. But since then we've gotten used to eat bread instead of flatbread and porridge. That'll be some readjustment. And sugar is out. No more sweets to reward you after a tiring day of rebuilding.
How will society manage? Will the surviving parts of the country, which lacks so many basic goods and face quite imminent starvation, be willing to care for the large number of refugees from the bombed areas? And with the total destruction of the Bodø/Salten-area (the only area I think will be totally destroyed due to multiple important targets), will the South ever manage to reunite with the North?
The North is a big unknown. If we have managed to get some warning and mobilize, most of out fighting men are in Troms, defending the Frøy-Line. When the bombs start to fly, I presume the Soviets use tactical nukes in the Frøy Line, so the Norwegian lines start to crumble. But at the same time, US nuclear bombs take out the 75 km-stretch of Soviet lands from Litsa Fiord to Murmansk Fiord, thereby obliterating the entire Northern Fleet, the Northern Fleet Strategic Bomber Fleet and the entire Northern Fleet Nuclear Submarine Fleet (those that's not already on the High Seas). With Noregian Home Guard Units having managed to do their rask of destroying all the bridges and roads and such in Finnmark, the Soviet Army of Kola is suddenly alone and isolated just when it's on the brink of a breakthrough in Troms.
Then you'll have the most inhospitable and low-populated parts of Norway quite full of bewildered soldiers. They can't get back to Kola. They can't get South beacuse of the destruction of Bodø/Salten barring the way. And going to sea - the North Atlantic in winter - not very tempting.