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