I'm sure crit modifiers only expand on this

Yoshitsune did nothing wrong.

Yoshi best boi

After beating the game once I set the difficulty to safe for NG+ and went and killed the reaper a few times as soon as Mementos opened up.
If you ever want to see what super easy mode is, that's it.

Skull ? Beating the reaper on his own ? Pushah ! You wouldn't find your way in microwave, let alone mementos