I had more trouble in No Return as a player who prefers a stealthy approach, as several of the mode’s encounter categories put you on the defensive by default. The Last of Us Part II’s main story typically structures fights so you can start out in stealth and go loud if you need to, but No Return has several encounters with aggressive enemies that lock onto you as soon as they spawn, which makes a stealth build harder to utilize over one that’s all about raw firepower.
The Assault encounter mode has enemies spawn with a general awareness of you, but they can still be taken out quietly. But then there are others like Hunted or Holdout, where enemies know exactly where you are and swarm you. Neither of those is the best place for a bow or silenced pistol. So while you may have tried to play The Last of Us Part II stealthily in the original campaign, No Return makes that a non-option. So buy weapons and upgrade accordingly.