Here is the full list of all 48 OLDTV achievements.
The base game contains 32 achievements, and there is 1 DLC pack containing 16 achievements.
Baby Steps
Culture Shock
4.436 Billion
Breed
Well done
Oranges, Walls & Salsa
Watermelon Central
Time to find space
Damn fine reflexes
Automation is the future
So you found the space bar
What a tease
Spending Time
Spending A Lot Of Time
Don't let mom know
Backinmydaywedidnthavemiceweusedtoeatbricksforbreakfastandcrossthegrandcanyonjustsowecouldgotoschool!
*cue destiny's child*
Don't confuse this with the other achievement
Made it rain
This needed a lot of focus - very well done if you achieved this
You're color blind after all
Some people were born to cheat for this achievement
THERE'S NOTHING LEFT TO DO - GOOD BYE!
Preteen Steps
Teenage Steps
Adult Steps
Old-Man Steps
Pleb stuff
Pleb-ish stuff
Almost Pleb stuff
Seasonally Pleb stuff
Not Pleb stuff