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