Here is the full list of all 22 Jets'n'Guns Gold achievements.
Reach score of 10.000 in Tetrix.
Crack 100 crates open.
Destroy 250.000 targets.
Unlock all 12 ships.
Reach score of 100 millions.
Make one hero obtain all medals.
Kill 100.000 air targets.
Kill 10.000 ground targets.
Kill 100.000 troops.
Activate 100 devices with RemCon.
Pick up 100 hitchhikers.
Finish one level with Armageddonator.
Kill 60 troops with one hit.
Find the secret base on lava planet's moon.
Finish game on hard difficulty or higher.
Find and capture all 9 galactic villains.
Find the secret science lab level.
Find Mr. Perfect's secret level.
Find the secret level with spammers.
Find all secrets.
Get to 10th round of the campaign.
Finish campaign without being shot down.