Here is the full list of all 40 Poop Clicker achievements.
Have 1 Cookie
Have 1 Poison
Have 1 Death star
Have 1 Atom
Have 1 Donut
10000000000000 per second
50000000000 per second
1500000 per second
500000 per second
Have 1 Luck
Have 1 Laxative
Have 1 Brainstorming
15000 per second
Have 1 Bot
5000 per second
150 poop per second just from Red plunger
300 poop per second just from unicorn
Unicorn upgrade
Have 1 Sharingan
1000 per second
Have 1 Friend's help
Have 1 Potato
Red plunger upgrade
100 poop per second just from corn
500 per second
Have 1 Unicorn
40 poop per second just from Hot pepper
20 poop per second just from nfs
Corn upgrade
make 100 poop per second
Have 1 Plunger
Hot pepper upgrade
0 poop per second just from quick tap
Have 1 Corn
Have 1 Hot pepper
Need for speed upgrade
Have 1 NFS
Quick tap upgrade
Have 1 Quick tap
Your first poop