Once you get used to using berserk then you won't die. The first time you use it then you will obviously just waste all your HP away, do something stupid - then die. I have done that too.
Once you know your limits you will berserk to within the amount of HP you think is safe and act accordingly. If I'm only in ult Forest, then I will make sure I have Jellen and Deband and go nuts. If I am in ult Desert I will berserk to an amount of HP I think is safe and either wait for Resta or just Resta myself and go on. As long as you know what is safe and what isn't - berserk is one of the best specials there is. Hey, if you have the skill (like Kef, lolz) you can go nuts with berserk in any area and remain safe. It's not ridiculously hard to avoid getting smacked around.
As for charge: I think it's cheap, noobish and needs to be nerfed. I jump for joy at the fact you can't add it to S-Ranks.
Once you know your limits you will berserk to within the amount of HP you think is safe and act accordingly. If I'm only in ult Forest, then I will make sure I have Jellen and Deband and go nuts. If I am in ult Desert I will berserk to an amount of HP I think is safe and either wait for Resta or just Resta myself and go on. As long as you know what is safe and what isn't - berserk is one of the best specials there is. Hey, if you have the skill (like Kef, lolz) you can go nuts with berserk in any area and remain safe. It's not ridiculously hard to avoid getting smacked around.
As for charge: I think it's cheap, noobish and needs to be nerfed. I jump for joy at the fact you can't add it to S-Ranks.