3. The game does give you a break every now and then

Relax, no need to go back in...yet...

Thought it is only one break - you don't have to fight bosses more than once. Unlike all the levels and enemies, when you beat a boss, the boss is beaten. The seal to the main chamber is broken and no one else in your family will have to face that same foe again.

Of course, this means that you can't fight the boss again at all. At least, not until you beat the game. After that, once you enter New Game+, you will not only get to fight the bosses again,  but they'll be much harder. Isn't that great?

4. Death is a thief

Well, that's 220 gold down the drain...

Hide your coins! Better yet, spend them all as soon as you can. While you do carry over your gold when you die so your descendants can use it, you lose all of it once you enter the castle again. Yep, the entry fee is crazy expensive, but lucky for you it's a flat rate of "all your gold".

This makes choices easier. Should I buy that cheap upgrade to MP or should I save up for that massive boost to damage? You can't save up. Spend everything you can, because you lose it anyway. There, I saved you a headache. No thanks necessary.