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