Here is the full list of all 48 Space Pirates and Zombies achievements. It takes around 100-120 hours to unlock all of the achievements on Windows.
Explore 150 Star Systems
Complete the Game on Expert
Complete the Game on Insane
Destroy 25 Starbases
Explore 50 Star Systems
Complete the Game
Never use Respec
Beat all 10 arena ladders and all 5 tiers on bronze, silver and gold level. Be the champ of 150 events..
Clear all zombie infection
Feed Santa so much milk and cookies, that an elf falls off his sleigh
Destroy 2500 Enemy Ships
Collect 25,000 Goons
Complete 100 Missions
Unlock All Ship Hulls
Reach Tech Level 100
Defeat a Tier 3 Bounty Hunter Stronghold in Chapter 4. In short, do the impossible. You have our sympathy.
Research a Category to Level 10
Collect a Rare Specialist
The Clockwork II
Unlock All Components
Destroy a Tier 3 UTA Base
Collect 100,000 Rez
Reach Tech Level 50
Beat a Warpgate 10 levels higher than you
Upgrade the Clockwork
Destroy a Tier 3 CIV Base
Collect 2,500 Goons
Bribe Star Relations 5 Times
Collect a Godlike Specialist
Complete 25 Missions
Space 250 Goons
Destroy 500 Enemy Ships
Collect 10,000 Rez
Explore 10 Star Systems
Train a Specialist to Expert
Bribe Past 5 Warpgates
Retire a Specialist
Collect an Uncommon Specialist
Mass Retreat 5 Times
Destroy 100 Enemy Ships
Collect an Elite Specialist
Reach Tech Level 10
Collect 250 Goons
Collect a Common Specialist
Escape the Sol System
Complete 5 Missions
Repair the Clockwork
Collect 1,000 Rez