Here is the full list of all 40 Leap of Faith achievements.
End up with Kira
Complete every task on your phone
Comment on every nuke you can
Aquire 5 atletic trait points
End up with Kira and Robin
Lie at least three times during one playthrough
Leave Steph behind
End up with Stephanie
Successfully sneak up on Steph
Try, but fail setting Chris up with someone
Don't set Chris up with someone
End up with Linda
End up with Holly
End up with Lexi
Stick to one girl all through the story
Find three easter eggs
Play through the game once
See a minimum of 20,000 screens in Leap of Faith
Well, that was unexpected
End up with Cece
Aquire 5 romantic trait points
Achieve a perfect score when helping Cece remember
Sleep with 5 different girls in one playthrough.
Have a threesome
Collect at least 30 images on your phone
Unlock every dialogue option when sunbathing with Holly
Aquire 5 flirty trait points
Find Robin's pin-code
Show great expertise as a rear end identifyer
Reach max points with at least 5 people in your contact list
Nuke something
Unlock the party on the plane
Jump out the window at Steph's place
Message Steph before you meet up with her again
Set Chris up with someone
Reach full speed at the bowling alley
Flex at every opportunity
Get a hold on Lexi's number on your own
End up with Robin
Don't lie at all during a full playthrough