In order to avoid going insane I've taken a break from studying and the language and done some work on a basic jotnar civilisation. Jotunn are basically just giants with a few cosmetic changes for now, but there are three versions in the RAWs I've made.
Tribal ones which live in small underground groups like cave animal people, which have clubs and spears as weapons (huge weapons).
The wanderers which just meander like animals in caves and mountains, these can be tamed and trained for war, but have a really high pet value. They take 100 years to reach adulthood but they make great bodyguards for important people and double as prestigious pets. This is to represent a giant being taken in by humans.
The former two versions are intended to simulate trolls as they were in earlier folklore: giants in an antagonistic role. The last is meant to be the giants of jotunheim, a crude civilisation seeking to cast down both men and gods. They use giant clubs and axes, wear mail shirts and helmets.
All jotunn weapons are far too large for humans to use, but they can be melted down for a large amount of metal (if my knowledge of material stuff is correct). I intend to make giants a bit more bestial in time, probably just claws and some animal headed versions to save complexity but for now they'll do. I'll make the frost giants next, maybe a bit smaller and with some kind of numbing and impairing breath to imitate cold, then fire giants with the obvious immolation and fire breath.