Here is the full list of all 57 NejicomiSimulator Vol.2 (Gapping, Amputee sex slave, Petrify, Time Stop) achievements.
Achieve the specified number of logins
Achieve the specified number of unlock setting
Achieve the specified number of coming
Screwed-in depth achievement
You have penetrated the earth by screwing in.
You have circled the globe by screwing in.
You've exceeded the 1 / 5 speed of light by screwing in.
Pull the Jelly Bean a lot.
Pull the Twin Juicy Peach a lot.
Make her drink a lot.