Not all achievements unlocking for the second player in 2 player split screen mode

This has been going on for Lego games since Lego pirates I believe. Your only way to get them for her is to get her to start a game save and do them all again. Some of the achievements state in the details single player only.

The campaign modes for Halo: CEA and Halo 2: Anniversary only support two-player split screen; the multiplayer modes all allow for up to four-player split screen.

EPIC makes great games but they need to work on their achievements. Going all the way back to the first Gears game, achievements wouldn't unlock when they were supposed to. Wasn't there was a glitch on Gears 2 where if you loaded up a split screen game
with 2 profiles, player 1 would unlock the multiplayer achievements that player 2 had already gotten?

for some reason when playing split screen, only the primary players stats and level data will save, i had it happen to me when playing horde and beast mode, i unlocked the achievements and when i logged back on solo the challenges wouldnt unlock and i couldnt
get the skins for those achievements.

Hi, I played Overcooked 2 in local split screen a while back with both of us signed in to our profiles, and looked back at our achievement unlock dates as I recall we had played through the campaign twice. It looks like only the player who was Player 1
at the time unlocked the achievements. Unless the game has been updated since then to change this, I believe that only Player 1 unlocks the achievements in local co-op.

It looks like in online co-op, both players unlock most achievements together, although there is at least one that only unlocks for the host player. This info comes from the achievements page for the game on

TrueAchievements.

Hope this helps!