Here is the full list of all 7 2023: Alien Bugs Invade Earth achievements.
Die on the first level
Complete the 3rd level without getting damaged
Kill 4 Grey Ants before dying with the plasma pistol
Clear the 1st UFO with at least 20 HP Remaining
Die on the second level
You cleared the 2nd level?! HOW?! :O
Kill 6 bugs on the 2nd level before dying