I really liked this anime, so much that I immediately went on to read the manga. Since season 4 is not over yet, I have decided to write a review focused only on the first three seasons. What they all have in common is how an absurd humor is masterfully mixed with engaging drama. One moment everyone is having fun, and in the next moment there is an intense battle - it's pretty cool. Also, one of the best things about this series is definitely the characters, many of them are colorful and interesting (And also what they all have in common that they are not particularly adequate people).
Now we can talk about the three seasons separately.
The first season, as for me, is the weakest of the three, as it was clear that it had a small budget (I'll never forget that CGI bear) and the plot was just starting to unwind. (7/10)
The second season is better than its predecessor, the budget has increased significantly and the plot has already entered the active stage. (8.5/10)
I liked the third season the most, as it seemed to me that there was the strongest drama and the most unpredictable plot twists, the animation remained at the level of the second season (which is not bad). (9/10)
As for the disadvantages, I can only highlight that sometimes the humor goes too far and becomes more repulsive than funny, the best example being the main plotline of the third OVA in the second season, which revolves around one particularly disgusting character. If you've seen it, then you know what I'm talking about...
In conclusion, I want to say that Golden Kamuy is a good show and it is worth giving it a shot.
