The Day After Tomorrow Gilick

By picking the Thorn Blast, you spend all your stamina in a matter of 2-3 seconds, which triggers the rejuvenating siphon, ensuring you're getting healed back to full health between every reload. Then, as you take damage, you frostbite stun enemies via the Frost Shell skill, which allows you to melt them with Hypothermia for 200% damage on the massive damage output that is Thorn Blast. This build cleared Abyss 110 without even coming close to feeling threatened, on no catalysts. I stopped as there was no real point of going higher as it had reached the purpose of getting to the levels where you can easily farm catalysts.