Irrational announced the new 1998 Mode for BioShock Infinite: Burial at Sea where we will finish the story using only non-lethal tools. The 1998 will be very challenging Mode according to Ken Levine of Irrational Games. While developers were working on Burial at Sea, they thought it would be cool to offer players another way to play that recall the Thief used in gameplay where players can improve their skills furtive. This mode will add to the difficulty levels that already exist.  Burial at Sea-Episode Two will be released on March 25.