Those bastards really need to be nerfed. I just died again to a pack of them in Stratum 4 even tho equipped with Ash tail armor/helm.
Not only that they have that huge amount of HP, they evade too fast, two bites go directly to a 3-star shield (on stratum 2 that is!) and worst they are resistant to swords knockback and knockdown (3rd swing).
Honestly Snarbolax is a Pussycat compared to any Alpha, one bite of an Alpha makes more damage than I take during the entire fight with Snarbolax.
Yes indeed they are >.<