Here is the full list of all 21 Gemini: Heroes Reborn achievements.
TK Throw 1000 Things
Find 30 Secrets
Sisters
Completed Temporal Loop
Dug Deeper
Catch 10 Rockets
Best Friends Forever
Found What You Were Looking For
Kill a dozen enemies via Deathtraps
Uncovered Alex
Made it to the Elevator
Escaped the Prison
Package Delivered
Survived the Elevator Battle
Introduced to Mason
Learned Time Stop
You Died
Learned Time Scout and Time Shift
Learned Telekinesis
Finished the Opening Tutorial