Beating youself is pretty easy, if costly
Yeah but as I always review, if you couldn't do it without a guide then it is a fault. (I don't care how the internet reviews its games. My reviews are based on being guideless)
It just pops out of nowhere. After yourself the next two levels are fair (Sorta, due to how it is set up it is slightly unfair), then another unfair level (admittingly not as bad as Yourself)
It is mostly set up as a "You will EVENTUALLY unlock it" but that can be hours or even days if hell took you excessively long (which anyone who took a healing sword probably does)
Best of all due to the way how the game works, it is easy to actually succeed on the boss but lose anyway.
Developer's Computer is the end boss, it is not supposed to be easy
I have had less trouble on him then on hell and can even grind him. Knowing how to beat him however... is another story.
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Oddly I am using my Point and Click Standards on this game. For Candy Box I may let that slide since it seems less like, for example FTL, a game where its poor design choices are meant to be ignored because of the availability of guides... but rather that Candy Box is meant to be played with a guide or a collection of friends.