What difficult games/game challenges did you give up on?
Be it a game that's difficult in its entirety, or a particular challenge in a game that you just couldn't complete.
For me, there are three that come to mind:
Super Hostile: Waking Up (Minecraft Custom Map, Hard difficulty). That damn water section...
Terraria Zenith Mode. Coming from someone to whom Master Mode is fairly easy, this was rough.
Calamity Death Mode (Terraria). I beat DoG (this was back when a headshot was an automatic death), but I just could not click with the Yharim fight. I also think burnout was at play here because that was a LONG playthrough.
I usually never complete the "extreme" challenges present in some games, like path of pain and the pantheons in Hollow Knight, or the B-sides in Celeste. I try them, but when I realize that completion will require lot of time and effort, I really don't feel bothered enough. But I'm ok with that because this kind of stuff is optional, and it's actually cool seeing more talented gamers deal with them