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