Save one housemate.
Save all six housemates.
Watch all the housemates reveal their secrets.
Open all four locked doors in the house.
Witness every possible event across all the different timelines.
Listen to voicemails for all six housemates.
Save all six housemates while also resolving their personal issues.
Read all letters in the house.
Receive a final revelation.
Watch all possible death scenes across all the possible time lines.