Here is the full list of all 42 Element-174 - there are Part 1 achievements.
Go to the movies with Ash.
Visit Caroline twice for bad behavior.
Turn down Jules's invitation in front of Chloe.
Have Emma stay a while on Day 7.
Never turn down Holmes during Week 2.
Don't turn down Isabella at the gym.
Wake up after almost getting run over.
Visit Jules’s mansion for the first time.
Visit the restroom at Bob's Corner twice.
Run into Madison at the pastry shop and restaurant.
Get an extensive spying lesson from Malia at the park.
Have all 5 points with Penny by the end of Week 1.
Sneak into Rachel's dorm after getting to know her.
Have all 5 points with Sarah by the end of Week 1.
Don't punch Caleb, don't bully Jenna or Madison, and see Trish on Day 6.
Have Katy, Rachel and Zoey's routes active by the end of Week 2.
Give Ash 4 lessons by the end of Week 2.
Take Caroline up on her offer on Day 14.
Watch all available streams.
Don't tell Holmes about Emma on Day 14.
Watch Holmes kill Emma on Day 14.
Have Isabella fall for you and then save her life.
Watch Jenna 3 times.
Have someone fall for you after bullying them on Day 4.
Don't reject Katy after the ritual.
Visit Madison 3 times at the BSC.
Have Malia fall in love with you.
Have all 10 points with Penny by the end of Week 2.
Save Rachel from "Katy's" ritual after sharing your feelings with each other.
Don't agitate Sarah while on the library rooftop during Day 14.
Never turn down Trish during Week 2.
Only have Zoey's route active by the end of Week 2.
Be with two women in a single day.
Survive a brush with death.
Did it really happen that way..?
Eat at Bob's Corner three times, dine at the nice restaurant and brunch at the gastropub.
Reject 3 women in a single playthrough.
Witness 3 deaths on Day 14.
Choose only the left option through Weeks 1 and 2.
Have no routes active by the end of Week 2 without anyone dying.
Complete Episode 1 of Element-174
Complete Episode 2 of Element-174