I've spent most of the day playing it with friends (typically 2-3 per session) and as such have only played hunters and i've not touched the monster as yet. Got to level 13 mostly playing medic, toyed around with Lazurus but prefer Val.
So that being said I feel we've won about 80% of our matchesm typically being wiped out by a level 3 monster if we messed up somehow like getting separated, overconfidence or turtling and fighting a fully buffed and armored opponent.
I'm not sure on the balance yet it feels like there is a lot of option for skill and tactics that might make it seem more one sided that it typically is, especially when dealing with new players on either side. Taking down the monster was often very satisfying and the difference utilizing a bit of teamwork and communication really did step up our game. Having a tracker that knows what signs to look for and can lead a group and direct adds a really interesting role into the dynamic.
The performance of the game itself was pretty dire with long loads, bad matchmaking and some graphical hitches but it's an alpha (for whatever that means now) so that gets a pass, albeit with a concerned look. I really enjoyed the experience and it made for some genuinely fun team gameplay, even when we lost we felt we knew why'd we'd messed up (even if some of the blame might have been with the silently PUG of the party) or how the monster had gotten the better of us that time.
It's fun, I don't know how long it'd remain fun with the total maps/monsters/hunters. But it has promise and sets up a fairly unique experience for asynchronous class based team shooters that mix up the films Trollhunter and Monsters.