first off i like to say the game is awesome can not wait for the second but i have a couple questions.

Can you start a new game plus with all your same stats and levels?

the Downloadable content is it a new area where i have to level up again or can i use my same file? i dont wonna buy it then realize i have to start over.

i want to get all the achievements is that hard? or pretty easy?

Thanks to anybody that can help

then you have to beat it on normal or hard? because i beat it on easy i think and i never got that option. unless i am wrong

THE DLC you have to play during the game. So  you can just load up a save point before you get to the final push if you are already done with the game

ahhh thanks i see loll

The acheivements are not hard there just time consuming. Took me 3 and a 1/4 playthroughs to get them all.