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