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