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