SECRET secret achievement in BioShock?

I noticed this after completing BioShock today. Is it a truly secret achievement, just a glitch or something else? leave a comment if you know the answer.
Heres what is happening in the video: I go onto my achievements of the game and you see 1 secret achivement at the bottom of the list. I then compare games with a friend and then there are 2 secret achievements at the bottom that I havent got. *NOTE* The person that I compare with has played the game but it also happens when the other person has not.

Category:

Gaming

Tags:

• Secret
• Achievement
• In
• BioShock
• Xbox
• Achievements
• Glitch

[zebady1234]

i have no idea greg m8 , you could have got better quality

[NinjaStarVideos]

I had to record it on my phone because my camera battery is broken......sorry for poor quality everyone but I hope you get the idea

[crazyguyonthekorner]

@SuperDickSlap

that has to be the classiest name ever

[Alt01dsCSM]

the secret achievement is called "irony." Its when you kill sander cohen after you complate his masterpiece and take a picture of sander's dead body

[THISISYOUTUUUUUUUUBE]

@Starspalace start off in a plane (bioshock 1)

[AzzATheGodlike]

if you have live and update bioshock one you get an extra achievenment called big brass balls you get it by beating the game without using a vita chamber

[Camboisdark]

big daddy my man

[freina94]

i know 1 of the secrets.... go on options and change so when u die u dont start in a vita chamber. got that 1 after some time with playing.

[Starspalace]

this the one where your a big daddy the whole game or is it the one where you start off in a plane?

[SuperDickslap]

@Star2000s why does he need a new tv?

[Star2000s]

u need a new t.v.

[fallout3124]

You just cant die it dosnt have to be on hard but bioshock 1 had to be on hard for that achivment