There are some requirements for sure, but it’s not that hard to achieve. First of all, you need to finish the following quests : Animal magnetism Dwarf cannon Ernest the chicken Murder Mystery Observatory Pries
If you are desperate for Hits Exp, then by all means go ahead with fire bolt or even Crumble Undead. I strongly do not suggest using Fire Bolt until 65+ Magic, as Crumble Undead would give you more experience/chaos rune with such a low damage rate. Experiments have proven that High ...