Here is the full list of all 160 Shonen Idle Z achievements. It takes around 200 hours to unlock all of the achievements on Windows.
Complete all rank C missions
Complete collection at 60%
Kill 400 bosses
Collect 18 pets
Collect 18 clothes
Collect 15 pets
Collect 15 clothes
Reach monster level 450
Kill 300 bosses
Defeat the 40Th boss
Collect 12 pets
Reach monster level 400
Have 150 K training points
Complete collection at 40%
Collect 12 clothes
Have 130 K training points
Kill 200 bosses
Have 110 K training points
Have 100 K training points
Have 90 K training points
Have 80 K training points
Play 5 months
Kill 150 bosses
Play 4 months
Collect 9 clothes
Kill 2 M monsters
Have 70 K training points
Reach monster level 350
Gain 1337 shonen power
Get 10 party companions
Have 60 K training points
Play 3 months
Gain 1000 shonen power
Kill 1 M monsters
Have 50 K training points
Kill 750 K monsters
Kill 500 K monsters
Get 9 party companions
Defeat the 30th boss
Reach monster level 300
Play 2 months
Collect 300 treasure chests
Reach monster level 260
Gain 1 QaD global ki
Gain 1 Td global ki
Collect 9 pets
Reach monster level 220
Gain 1 Dd global ki
Gain 500 shonen power
Kill 250 K monsters
Collect 200 treasure chests
Defeat the 20th boss
Gain 1 Ud global ki
Complete all rank D missions
Collect 6 clothes
Reach monster level 180
Gain 1 Dc global ki
Get 1 No attack points
Collect 150 treasure chests
Gain 1 No global ki
Get 1 Oc attack points
Complete collection at 20%
Reach monster level 150
Gain 1 Oc global ki
Get 1 Sp attack points
Play 1 month
Get 8 party companions
Gain 250 shonen power
Gain 150 shonen power
Get 7 party companions
Gain 100 shonen power
Get 6 party companions
Get 5 party companions
Gain 1 Sp global ki
Reach monster level 120
Get 1 Sx attack points
Get 4 party companions
Collect 100 treasure chests
Collect 6 pets
Gain 1 Sx global ki
Defeat the 10th boss
Get 1 Qi attack points
Have 30 K training points
Reach monster level 90
Kill 100 bosses
Get 3 party companions
Gain 50 shonen power
Collect 75 treasure chests
Kill 100 K monsters
Have 20 K training points
Kill 50 bosses
Get 2 party companions
Collect 50 treasure chests
Collect 3 clothes
Have 10 K training points
Gain 10 shonen power
Collect 25 treasure chests
Have 5 K training points
Get 1 party companion
Kill 10 bosses
Collect 15 treasure chests
Gain 5 shonen power
Collect 10 treasure chests
Play 3 weeks
Gain 1 Qi global ki
Get 1 Qa attack points
Play 2 weeks
Collect 5 treasure chests
Kill 10 K monsters
Gain 1 Qa global ki
Reach monster level 70
Play 1 week
Get 1 T attack points
Play 3 days
Gain 1 T global ki
Have 1000 training points
Collect 3 pets
Play 1 day
Kill 5 bosses
Reach monster level 50
Get 1 B attack points
Gain 1 B global ki
Get 1 M attack points
Reach monster level 30
Get 100 K attack points
Kill 1 K monsters
Reach monster level 20
Gain 1 M global ki
Have 100 training points
Gain 100 K global ki
Reach monster level 10
Kill 100 monsters
Kill your first monster
Kill 500 bosses
Complete all rank B missions
Kill 3 M monsters
Kill 4 M monsters
Kill 5 M monsters
Kill 650 bosses
Kill 800 bosses
Kill 950 bosses
Collect 21 clothes
Collect 24 clothes
Collect 21 pets
Collect 24 pets
Complete collection at 80%
Complete all rank A missions
Kill 6 M monsters
Kill 7 M monsters
Kill 8 M monsters
Kill 1100 bosses
Kill 1250 bosses
Kill 1500 bosses
Collect 27 clothes
Collect 30 clothes
Collect 27 pets
Collect 30 pets
Gain 2500 shonen power
Complete collection at 100%
Complete all rank S missions