Let me preface by saying that Valheim is by far one of the most screenshottable games I have played.
A big part of Valheim is exploration and the lighting in this game is stunning. I like the sense of danger that this screen shot exudes: a lone viking walking through a thick forest, seemingly alert for any enemies lurking behind the next tree.
To be honest, I loved the swamps. The sunken crypts are too easy. I died many times in swamps, but never in a crypt. The stagbreaker and iron sledge are your friends.
Same - I loved leaving pathways blocked and using the iron sledge to beat enemies to death from the other side!