Crusader Kings III: Northern Lords Review (Pickelhaube)
Northen Lords is in my opinion unbalanced DLC.
If you play as norsemen you will quickly become a powerhouse and be able to steamroll through competition (this can be absolutely fun experience) but if you play as any Britannic or northern European nation, you will constantly be harased by 8K stacks either just stealing your land or outright ending your campaign. With this playing as Irish duke and unifying Ireland in one generation becomes pain in the ass and is just frustrtraiting.
Now some positive things about this flavour pack, music is awensome! Absolute banger! And art is also georges.
There are also some new features like establishing runestones (upon victory, death of a king etc.) that can give realm bonuses. And a few new options like dueling other norse kings (to settle disputes etc.,).
I would recomend buying this DLC when it is on discount or just not buying it as it is not the best one gameplay wise.