I’ve been playing AstroMenace in preparation for Fam plays with cheats.
Save files for version 1.4
These Save Files contain a profile that has every level unlocked, just place PilotProfiles_1.4.data in /home/username/.config/astromenace (you’ll need to figure it out if you’re not using Linux).
All profiles have a Destroyer with two Lasers and two Masers.
You can use F2 to show FPS, F5 to slow the game down and F6 to speed it up.