Listen I still don't get why all of you are stuck on Jado and the fire ruins boss, but I'll help you with that problem with these tips :]
K, first you'll need at least lv.50-60 water type spectrobes when beeting the last boss krawl (The fire dude), I forget its week points but be aware that it WILL slam its body on you several times, including climbing on the wall and throwing huge fire balls at you.
Now when your facing Jado you'll need to have lv. 60-70 spectrobes (doesn't matter what type) and his week spots are his face, shoulders, and butt (HAHAHAHAHA) But the only attack you'll wanna look out for is his shadow attack. What it is is he turns invisable and attacks you, so run around till hes visable again.
Hope this helped, if you have any questions just pm me :)