Here is the full list of all 14 INSIDE achievements. It takes around 3-4 hours to unlock all of the achievements on Windows.
Do an elevator pitch
Pull together
Safe falling and hard landings
Something’s not right down here
Unearthing secrets
They never made it to market
Lies beneath the city
Dislodging derelict in the depths
Skipping stones at the beach
Dive back in
Take a deep breath
Shadows at noon
Hanging up
It comes together