BioShock 2

To farm xp faster, you can create a private match and play "adam grab" alone. Grab the little sister once the match starts and hold her for 3 minutes to win about 1000 xp. Repeat this process until you gain the level required for the achievement. Once you're done just join any public game and the achievement will pop.

Goal is to play all 10 original maps (Arcadia, Farmer's Market, Fontaine's Home for the Poor, Fort Frolic, Hephaestus, Kashmir Restaurant, Medical Pavilion, Mercury Suites, Neptune's Bounty, Point Prometheus) to the end.

You can do this easier way - make private match on all original maps and win -- fastest way to do this is by selecting Team ADAM Grab mode, where you can finish one match in ~4 minutes (grab Little Sister, wait for 3 minutes and you're won) -- and when you finish that, win any public match on any original map and achievement will be unlocked.

You can get Aqua Incognita achievement along with this one if you win private matches on all 16 maps and then win on any public one. Both achievements will be unlocked at the same time.