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 levels on hard difficulty.
Destroy 500 enemy waves.
Unlock bonuses on all ships.
Finish all levels on easy difficulty.
Destroy 5000 enemy ships.
Spend 250 player upgrade points.
Finish all level on medium difficulty.
Kill Emperor.
Kill Eldon.
Add your own music.
Kill Xila.
Spend 100 player upgrade points.
Destroy 100 enemy waves.
Use laser 250 times.
Unlock all bonuses on single ship.
Destroy 1000 enemy ships.
Use homing missiles 100 times.
Spend 50 player upgrade points.
Kill Narder.
Spend 50 ability upgrade points.
Finish level 1 on hard difficulty.
Finish level 1 on medium difficulty.
Destroy 50 enemy waves.
Destroy 500 enemy ships.
Use homing missiles 50 times.
Use laser 100 times.
Unlock bonus on single ship.
Kill Hazzard.
Spend 20 ability upgrade points.
Use laser 50 times.
Play fortress mode.
Use homing missiles 20 times.
Play asteroid mode.
Play enemy mode.
Destroy 10 enemy waves.
Destroy 100 enemy ships.
Use laser 20 times.
Spend player upgrade point.
Spend ability upgrade point.
Finish level 1 on easy difficulty.
Destroy 50 enemy ships.
Destroy 10 enemy ships.