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