LogFAQs > #973423147

It actually doesn't take more repetition. Again, leveling up in Zelda 2 is way more significant than any power boost you can get in Elden Ring. You may feel as though you are progressing faster because you get a +1 here and a +1 there, but they are literally just doling out very minor boosts to make the progression feel more seamless rather than giving you meaningful boosts. And the boosts aren't that hard to get in Zelda 2. I know it's a joke/isekai staple idea that you could slowly work your way up to max power by killing the weakest enemy in the game, but that kind of is actually possible in Zelda 2 (minus upgrade items) and it would still take you less time.

And, btw, the last dungeon of Zelda 2 is something you absolutely can keep trying until you figure it out. If you die in the Grand Palace and select continue you start at the Grand Palace. Maybe it's not right at the boss fight, but all things considered it's still on the time scale not too dissimilar to the more epic Souls bosses once you've learned what you need to.

Edit: Just checked a 100% speed run of Zelda 2, no skips. Entire Grand Palace in 9 minutes for a seasoned vet.