Here is the full list of all 42 Survive in Space achievements. It takes around 10-12 hours to unlock all of the achievements on Windows.
Finish all level on medium difficulty.
Destroy 500 enemy waves.
Spend 250 player upgrade points.
Unlock bonuses on all ships.
Finish all levels on easy difficulty.
Destroy 5000 enemy ships.
Kill Emperor.
Finish all levels on hard difficulty.
Spend 50 ability upgrade points.
Kill Eldon.
Add your own music.
Kill Xila.
Spend 100 player upgrade points.
Destroy 100 enemy waves.
Unlock all bonuses on single ship.
Use laser 250 times.
Destroy 1000 enemy ships.
Spend 50 player upgrade points.
Kill Narder.
Finish level 1 on hard difficulty.
Use homing missiles 100 times.
Destroy 50 enemy waves.
Destroy 500 enemy ships.
Use laser 100 times.
Spend 20 ability upgrade points.
Kill Hazzard.
Use homing missiles 50 times.
Unlock bonus on single ship.
Use laser 50 times.
Use homing missiles 20 times.
Finish level 1 on medium difficulty.
Use laser 20 times.
Play enemy mode.
Play asteroid mode.
Destroy 10 enemy waves.
Destroy 100 enemy ships.
Play fortress mode.
Destroy 50 enemy ships.
Spend player upgrade point.
Spend ability upgrade point.
Finish level 1 on easy difficulty.
Destroy 10 enemy ships.