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