I bought the DLC after beating the game but I don't see an option for it in my menu, am I missing something?

For some reason the achievements in game aren't showing up in steam. Does anyone know why, or have any ideas?

bro ive been playing for several hours trying to get zens ending after completing phoenixs/joyces-- then it occurred to me that zen probably isn't even romanceable since you can't change his gender like the others im kind of a dumbass wtf

...after just 45 minutes because I didn't care to write down Teal's username. Why give a default name and then don't repeat that later in the game? And so my happiness drops to zero and I may not come again.

So I've gotten all of the 10 achivements but can't get the completionist one? Did I miss something or is it a glitch?