Eight years ago, I was playing Dark Souls 2 and trying to beat Iron Passage and the boss Blue Smelter Demon. He isn't that hard, but the path way to reach him is bullshit full of trap that make you wait a fuck ton. A huge time waster that isn't fun in anyway. After hours of getting pass the trap areas and learning the boss move set, in my moment of weakness, I used the summon, and beat the boss in one try.
Almost a decade later and I still regret it. It's like I cheap out and doesn't finish the entire game. I need to dig the console out and clear it properly one of these day.
I don't regret not killing the tigers in Frigid Outskirt though. That area is bullshit and only insane people beat it.