bonus points when there's no checkpoint before a boss fight so you have to redo 50 fights just to die again and repeat the process

DS1 I feel is decent with this (could be Stockholm syndrome) and Elden Ring removes the issue almost completely. But Jesus Christ DS2 was awful in this regard. At least they added the mechanic where mobs stop respawning after you've killed them N times; I removed every single enemy from along the Smelter Demon corpse run lmao