As a huge fan of Vampire Survivors and having played a LOT of the copycat games that spawned in its wake, I'm confident in saying that Halls of Torment is the best of the lot by far and even better than VS. Sick ass retro Diablo-like aesthetic that absolutely DRIPS with atmosphere and texture and personality, quest-based meta progression that's way more interesting than just "spend 1000 gold for +5% permanent damage!", 500+ challenges/achievements to complete, characters that are actually distinct and require very different playstyles, there's GEAR you can collect and equip like an ARPG, and one of the characters has a 
who goes around biting the dicks off of demons.
If you have any interest in the Survivors genre or roguelikes in general I'd strongly recommend at least playing the demo or dropping $5 on the full game (god I love that VS set the trend of making these games dirt ass cheap). I started playing back when it first launched in EA and was immediately hooked and its only gotten way better since.
Oh. Thats a much quicker release than expected. I did play Torment a bit after it came out in early access. What would you say are the best additions since they early access days ? ( I sadly wont have time to check it out myself for a while)
Lots more content in general (maps, characters, abilities) and improved Agony mode and potions (idr if those were in the initial EA or not)