I found a list on (of all places) a site called “TV Tropes,” describing common tropes in the sagas. I haven’t studied it exhaustively, but I find nothing here to disagree with . And some of them are amusing:
Color-Coded for Your Convenience: When colorful clothes are mentioned, it’s a hint of what is about to happen for the Genre Savvy. Character wears blue: Character is intent on killing another one. Character wears red: Character will probably get killed soon
Determined Homesteader’s Wife: Norse women worked hard — frequently harder than the men. Side note: While women in Norse society had certain rights that they typically did not have in medieval Christian societies (such as the right to divorce her husband or the right to inherit), by and large Norse society was sexist — women could, for example, not vote in the assembly or hold chieftaincies. In legal affairs, they were usually represented by male relatives.
- The idea was that, the man is “lord” outside the house, and the wife is “lord” inside the house. As such, she didn’t have much influence in public. Still, she was the one with the “keys”, and it was a socially accepted punishment to lock the husband out of the house should she find it necessary.
- Foreshadowing: The Norse tended to believe in predestination, and premonitions of clairvoyants and prophetic dreams will always turn out to be true. More subtle foreshadowings are seemingly minute happenings that go unexplained by the narrative, but are to be understood as omens. For example, a character stumbling means that there is trouble ahead, and depending on the character’s own Genre Savvy he/she may actually realize this.
- Lost in Translation: The most obvious example is the key Icelandic social position of godi, which is so impossible to translate into a single English (or most other languages) word that most modern translations simply describe it in detail in the introduction or a footnote and then use it untranslated. Also atgeir, the Weapon of Choice of many saga characters, is often translated as “halberd” despite the fact that nobody is certain whether that’s what it actually was and no actual halberds dating from the saga era have ever been found. Finally, Old Norse poetry is notoriously difficult to translate into other languages thanks to its reliance on wordplay and complex metaphor. In particular, wordplay in poems based on people’s names is often just explained in a footnote.
- The Pirates Who Don’t Do Anything: The view of the 13th and 14th century Icelanders on the viking expeditions of the past was decidedly ambivalent. Horror and moral contempt at these barbaric practices was mixed with pride in the adventurous endeavours of one’s ancestors, bold and daring gentlemen of fortune that they were. As a result, many sagas dealing with viking episodes struggle noticeably with the problem of making protagonists who spend time as sea-raiders look heroic, not horrible. One way to do this is to cover viking expeditions only summarily, generously glossing over the questionable details; another way is to have the heroes get into a clash with other, more villainous vikings, in which the latter are soundly defeated. Thus, the good guys have not only opportunity to prove their bravery against villainous mooks who deserve no better, but also end up with a lot of loot, without the stigma of having it robbed from innocent people. Of course, they never think of giving it back. — The big exception to this rule is, of course, Egil’s Saga, whose eponymous protagonist loots and kills unapologetically for his own enrichment.