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