Oh yess!!! I did it.I killed those guards on level 14(I just did 3 fights with cecil after changing into a paladin).I was lucky I could hit the first for 200 damage before they used mini.I used Hi-Potion to heal me until I was able to use a spiders silk to slow them down.After that I used hermes shoes to haste me so that I could heal enough with just wasting potions.
Then a guard uses Mini again the other pig but that didn't matter because I could hit for nearly the same damage as normal and killed the first guard.
The second uses Mini on me and the same game again.
Healing
waiting
Mini
Killing
winning
I won

After that I had to face Yang as a pig but he was no match.His kick does 40-55 damage and I had nearly full health at the beginning of the battle so he went down quickly.

I hope I won't stay so long on other bosses,but I'm glad that I did it!