Here is the full list of all 30 Gratuitous Space Battles 2 achievements.
Beat a mission with 10% or more honor earned.
Design 100 ships.
Design 10 ships of every class type.
Beat all 10 campaign missions on medium.
Beat all 10 campaign Missions on expert.
Beat a mission with 25% or more honor earned.
Carry out mid battle repairs to over a hundred fighters in one battle
Refuel over 100 fighters in a single battle.
Fire over 1,000 missiles in a single battle
Fight over 25 online challenges
Post over 12 online challenges
Inflict over 10,000 radiation damage in one battle
Beat all 10 campaign missions with each of the four basic races
Destroy over 500 enemy fighters in a single battle
Neutralise over 200 enemy missiles in a single battle
Destroy over 200 enemy cruisers
Destroy over 100 enemy dreadnoughts
Win a campaign battle without losing a single ship
Deploy over 20 ships with a camouflage shield in a single battle
Scramble enemy ships with ECM over 500 times.
Beat online challenges by 10 different players
Have more than 100 different players fight your challenges
Launch over 1000 plasma torpedoes in one battle
Design at least 20 ships for all four races
Take down 100 enemy shields using shield disruptors.
Destroy over 1000 enemy fighters whilst caught in tractor beams
Win 10 battles without using a dreadnought
Repair 1000 shield support energy in a single battle
Field a fleet with over 50 support beams Installed.