Echoes is good. I think the praise it receives is earned. But it's not perfect. I think the encounter design is frankly wack, the game just throws too many enemies at you. And the part where you have to crawl past the bodies with the snarks in them is not fun. But this is still a well made and very competent mod. I would say it is worth a play, but I would probably play it on normal mode if I were you.