Dark Souls 1 has a genius method of showing you the general attitude you need to play the game. The undead asylum shows you the tutorial boss three times, each in a different context, each time to get you both mechanically and emotionally prepared for the whole game.

First instance you see the boss (not actually the real one, but it's the same kind of creature, so whatev) is through the window to your right just as you exit the first room you're in. It's huge. Makes a loud stomping noise when it walks. It's massive and imposing. You might think it's going to be impossible to fight such a thing, much less defeat it. You're equipped with nothing but your starting armor and a broken sword handle. The game is telling you the bosses, and the path you'll be playing, will be imposing and will seem difficult. Dark Souls knows its own reputation.

Second instance is where you're put in a nearly impossible situation where you actually do fight the asylum demon with a broken sword handle. You're absolutely outmatched and have no chance of winning unless you're already intimately familiar with the mechanics and have a lot of time to burn. The game is signaling that without proper preparation, practice, and skill, you will not be a match for the enemy encounters. It will be frustrating. You'll die instantly. The solution here is to run out of the room towards the back, escaping the encounter entirely.

Third instance is where the game leads you up to the balcony and you attack the demon from above, instantly taking off half its health. Now you've got this. You're familiar with the mechanics. You can dodge. You can weave. You now have a proper weapon. You've got your estus flask. You're all set. If you're decent enough at games and have some reflexes, you shouldn't have much issue with the boss. The game is giving you confidence here.

Each step of the way you're being instructed into how you'll face every boss. You'll first be intimidated, you'll then fight what seems to be an impossible battle, then you'll go back through previous areas. You'll prepare, get some new equipment, maybe level up a few times. You'll figure out maybe there's a different way of approaching the fight. You'll find a way, despite being so afraid at first.

It's an utterly genius and frankly supportive thing the game does. It wants you to feel good. It wants you to feel that triumph of facing down these impenetrable fights and coming through to the other side. It's a game meant to be beaten after all.