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