I'd also go for 'My arms, Your Hearse' Every element has slight sadnesses in it.
It's also my favourite Opeth album.
Still Life is also quite depressed.
Damnation is the most depressing all-around, I would say. "Windowpane" is rather gloomy, and although it eventually picks up a bit with a smidge of hope in "Death Whispered a Lullaby", it's soon crushed again by "Closure" and its following tracks.
The other albums, while they can be just as sad, are obviously heavier and still get you pumped-up a bit.
what the fuck is the avatar that abcdefg has, i have been trying to figure it out for about 2 weeks now.
hope leaves is my favorite song off of damnation, as a matter of fact, i tabbed it out for metal tabs, i think its perfect, but ehhh, i dunno. DAMNATION KILLS ALL.
Depressive is not a word. I can't count how many times I've seen it used here. I understand English isn't everyone's first language. DepressING is the operative word.
I guess I'm the only person to feel this way, but I'd say Deliverance. It's quite obvious from the music that that aspect of the narrator (of both D1 and D2) meets a bad end, whereas on every other album there seem to be tiny hints of a better ending.
I would deffinately have to say that both ''My Arms, Your Hearse'' and ''Still Life'' give off a very depressing feeling. Mainly due to the lyrical content of the albums, but also the music tends to create a rather depressing atmosphere aswell.