The new unit, the Berserk, can only be hired with gold or special coins. First, it's great we have a new unit, but there's a problem. When these units attack, they die. This is not a problem for normal or mercenary units, but for special untrainable units, it's bad. The same thing was happening to the Angry Snowman.

I suggest when you create a special unit like Berserk, they should not die when they attack, only when they are attacked.