What are the achievements like demi? And what exactly do you do in the game?
Achievements are straight-forward, you can get a nice chunk for just beating the game. There are other achievements for taking your time and exploring, finding various LOST relics and such, like Hurley's van.
Here's what's happened so far -- I am really early on
* Watch opening cutscene, plane crashes
* Wake up in jungle, walk forward, find dead body in tree, see figure as well, triggers something mentally
* Walk forward more, find Kate, who is all "omg go away i am hiding from marshall"
* She gives me water bottle, and triggers flashback
* Flashback is replay of him remembering why he remembers a water bottle... it's here he remembers that Kate is a fugitive
* You have to take a picture of this moment, so it becomes "clear"
* From here, you look around, and see 3 "memory items" (backpack, newspaper, pictures of him and girlfriend) -- this unlocks achievement ("find all memory items in flashback 1")
* Move forward, find Vincent, you have to use him to traverse the jungle
* You can call out to him so he barks, and you can find where he is
* Wind up at crash site, see survivors ("WALLLLLLLLLLLLLLLT") and their obvious bad voice actors (lol)
* Jack tells you to reroute the fuel so it doesnt explode and kill everyone
* Insert puzzle... that's where I am right now
Oh, and after the opening cutscene, it plays the floating "LOST" with the sound, omg it's so authentic