2 UNCLE-JO
As the wise men used to say, "for every Crag Hack, there is a Tazar:)))".
What is the strength of Crag Hack? His devastating attack. Therefore, something must be used against him.
And here's what can be used:
1. Expert Slow applied at the right time;
2. Defense skill with appropriate parameters;
3. Greater hero mobility;
4. Berserk;
5. Magic.

First and foremost, you need to think about the hero's mobility. This is almost always the most important aspect of the game. If your hero is faster, can move around more, visit more places, etc., then his parameters will also be good.

Next.
What is characteristic of Crag Hack's development? A rapid increase in the attack parameter, usually with some underdevelopment of other skills. What does this suggest? Using the opponent's strength against him! I believe that an expert Berserk will "greatly please" Crag Hack.

Signature "tricks" of Inferno:
summoning demons;
retaliation of devils and their older counterparts;
partial magic immunity of efreets and the ability of their older counterparts;
multiple retaliatory attacks of upgraded cerberuses;
teleportation to another Inferno.