I love the addition of challenges on PC (some of the best parts of Halo are the challenges/achievements) so much so that I think 343 should implement more PvE challenges/ ways to gain XP, for those of us who play mostly campaign. Give us an excuse to play the lesser played campaigns like Halo 1/Reach. 12 challenges a week doesn’t cut it for those of us trying to level solo without multiplayer. Gaining XP for completing campaign levels, increasing in difficulty, would give incentive to play on higher difficulties.
I dislike multiplayer because of the abundance of people yelling the gamer word/ being generally -Yoink-. I just want a way feel like playing the campaign is worth it.