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