Bought it a few days ago on the GOG sale and just finished it after ~57 hours - i tried to find all stuff, read as much as i could, etc though the game has a *ton* of side content that is hidden, so i couldn't find everything.
Asterigos is basically the poster child of "low budget AA jank": a small team (from an interview they had, the team was ~24 people) with barely a budget punching way above their weight and making a game that is clearly a product of love. It is also very janky.
From the pros, what i really liked was the worldbuilding (i like unique settings) that they seemed to have tried to put a lot of effort into. I also liked how exploration heavy the game is - people who just go through the main quest and bosses are basically missing most of the game (and some optional fights). The game doesn't hold your hand at all, you are throwing in the game world and you have to figure out 99% of it yourself, even down to the end (example: over the course of half of the game you get a bunch of items that add elemental damage - the game doesn't tell you which enemies are vulnerable to which damage, there is no "monster codex" or anything like that you'd find in other games, you have to try all of them yourself). I think the story is very interesting too, or at least unusual - and it did tie to the world itself, it wasn't some generic story they plonked into the world. I also liked how the story was pieced together from various notes, mails, posters, etc you found while exporing - sure, it isn't the most original approach but i still like it.
Also FWIW while i've seen it described as "Greco-Roman", it really is 90% Greek and 10% Roman :-P - they pretty much made everything sound Greek, though aside from some Greek names they used, the words do not mean anything (i did find very amusing however when they named two characters "Vangelis" and "Evangelos" because these two are the same name - and the characters using the same 3D model didn't help :-P).
From the cons, the writing and dialogs wasn't great (it is a great example of how worldbuilding/lore, story, writing and dialogs are different things that people often just jam under a generic "writing" category - the worldbuilding is great, the story is good, the writing is mediocre and the dialogs are often awful) and aside from the Hilda (main character) and Minerva (the NPC you'll interact the most with) VAs, pretty much all other VAs ranged from bad to awful (with Bion having the worst, the VA sounds like he's reading some thesis and puts stops at random places). Honestly i'd prefer it if they left the VA only for the main quest. Also while having the quests only show up in a journal (with the exception of the main quest showing what to do next on screen, pretty much nothing else is shown anywhere) is good, the journal text pretty much always lacks any information about the quest and is often some random thought Hilda had (example: you may get a quest to find Foobar and the quest given might even tell you where you may find Foobar, but the journal will record neither what you are looking for nor the hint you were given). You basically have to remember pretty much everything (and the quest givers do not repeat their requests if you ask them again!), the only thing the journal is good for is reminding you that the quest exists. A related con is that there is no map at all (the closest to a map is the background sketch of the city the teleport menu has when you unlock it) while the areas are often too large for their own good (they might look awesome, but navigating them isn't that awesome) and there are many maze-y places. Basically this is not the game you'll drop and try to continue at some other time unless you have perfect memory. If you don't and you drop it and then want to play again, you'll have to start from the beginning.
Overall i had fun with the game and i'd be looking forward to their next game.
EDIT: one thing i always find amusing is that when there is a new update to the journal, she actually takes out a book and scribbles on it :-P
