Here is the full list of all 42 Space Pirates And Zombies 2 achievements.
You destroyed 100 motherships
Meet someone from your past and blow up their stuff
Investigate the zombie signal
You destroyed 10 motherships
Don't worry, it was just a bandit.
Blow up some defenseless strike craft.
Learn how to command strike craft
Systems checks complete!
The bane of Carl's existence.
Clear the galaxy of infection
Complete the story
You killed a bandit Chief.
You beat 1 champion level Arena
You beat 5 champion level Arenas
You beat 15 champion level Arenas
You joined 1 battle
You joined 5 battles
You joined 15 Battles
You destroyed 1 Fail Gate
You destroyed 3 Fail Gates
You destroyed 10 Fail Gates
You destroyed a starbase
You Destroyed 3 starbases
You destroyed 10 starbases
You defeated 1 zombie captain
You defeated 5 zombie captains
You defeated 15 zombie captains
You destroyed a tier 3 bandit hive.
You executed a captain stuck in their escape pod.
You did a little tinkering with a podded captain's mind.
Converted an unneeded part into scrap in the inventory screen.
You won a bounty duel vs. another captain.
Fixed your ship while in a combat level.
You have found all the lore.
You have explored all the territories.
You have custom ordered a part from the catalog.
You cured a zombie captain using a ton of Rez.
You paid off your own bounty.
You stole a faction member from another faction.
You defeated a faction leader in battle.
You started an alliance with another faction.
You demanded the surrender of another captain for fun and profit.