Here is the full list of all 100 Seek Girl:Fog Ⅰ achievements.
The first rebirth
All characters were collected
Succeeded in conquering Alysa
Trigger eggs
Pick Alysa up
Meet all the girls
Reach a happy ending
Succeeded in conquering the demon
Purify demon
Find out the hidden character
Find question
Get the jade operator
Succeeded in conquering the princess
Save princess
Succeeded in conquering the slime
Save slime
Succeeded in conquering the weak girl
Save weak girl
Haven't eat any black heart for nine times
Give the wrong gift nine times
Find all gifts
Recall all the memories
Get token from debbie
Save debbie
Succeeded in conquering the hypnotist girl
Save hypnotist girl
The 20th injury
Reach a escape ending
Succeeded in conquering the princess's nurse
Save princess's nurse
Succeeded in conquering the pure saintess
Save pure saintess
Succeeded in conquering the explorer
Save the explorer
pick up five keys
Succeeded in conquering the little dragon
Save little dragon
Save the maid
Succeeded in conquering the maid
Save witch
Succeeded in conquering the witch
Talk to a mysterious guide
Meet 10 different girls
Recall 8 memory images
The 10th injury
Get ten blood bottles
Ten characters were collected
Succeeded in conquering the woman warrior
Save woman warrior
First injury
pick up three keys
Get five blood bottles
Find nine different gifts
Succeeded in conquering the summoner
Without getting hurt on the map, save six girls
Save summoner
Succeeded in conquering the chick
Save chick
Succeeded in conquering the sheep girl
Without getting hurt on the map, save four girls
Save sheep girl
Succeeded in conquering the black nun
Save black nun
Haven't eat any black heart
Give the wrong gift once
pick up a key
Skeletons can talk
Retrieve lost memories
Meet former teammates
Without getting hurt on the map, save two girls
First taste of breast
Get a blood bottle
Succeeded in conquering the earl's daughter
Show began
Give the right gift once
First encounter with a girl
Find a gift
Enter the fog scene for the first time
Had conversations with 8 different skeletons
Had conversations with all the skeletons
The first death
The fifth death
The tenth death
The fifth rebirth
The tenth rebirth
Give the right gift nine times
Give the right gifts to all people
Give the wrong gifts to all people
Throw a gift to slime
Throw five gifts to slime
Throw ten gifts to slime
Die three times before save a girl
Acquire the dragon's arm
Acquire the dragon's leg
Acquire the dragon's private parts
Acquire the dragon's power
NReach a betrayal ending
Reach an easy ending
Reach a decadent ending