Thank you. I just thought that it would let you select each level after finishing. I never thought of exiting and resuming the game.
Looking to boost:
(Please send a message with friend request or I will delete it
Bioshock 2 (Rapture Metro DLC)
Blacksite Area 51 (anything but CTF)
100,000 GS 12/31/09
200,000 GS 05/29/12