Hello!
Yes, the boss is difficult. In fact, you can even say it is impossible. Every time I design the final boss I make it really hard. In fact, there seem to be a small handful of people that find clever ways to beat the boss in almost every single update (I have yet to check for this one, but I am pretty sure someone is gonna do it without using the sandbox).
Even though it is probably a bad decision to make the final boss incredibly impossible, what comes after the final boss is so amazing that most people will agree that not many people should get to see it. I'm just kidding. There really is nothing after the final boss, thats why he's so difficult to beat. Or is there? I'm just trolling now, I shall stop.
But you never know when there will be something rewarding after it. Just saying.
Anyways, thanks for the info, I still want the final boss to be difficult and not just a walk in the park like you experienced with all the other enemies (i guess I made the game a little too easy?).
Thanks for the feedback!