Here is the full list of all 34 Galaxy of Pen & Paper +1 achievements.
Gather 100 minerals.
Unlock all reputation perks.
Create a character with a 9 in any attribute
Choose all different choices for a single event.
Unlock the Savage class.
Unlock the Medtech class.
Unlock the Negotiator class.
Beat the game.
Finish off a space pirate with your special weapon at full charge.
Reach level 25.
Land on 25 different planets.
Play with 4 roleplayers at once.
Complete all quest types.
Grab some food and place it on your table.
Swap a skill after a game over.
Unlock the Heavy class.
Engage a pirate ship and win the battle.
Talk to 50 npcs.
Unlock all optional classes.
Complete 50 side quests.
Finish the game having the Achiever roleplayer in your party.
Reach 100% reputation at the highest Rank.
Defeat a boss with a single character alive.
Gather 99 of any consumable items in your inventory.
Unlock all metashop items.
Grab all weapon and armor upgrades for a character.
Used all minerals available in the universe as a currency.
Deal a critical damage of 500 or more using your Opportunistic Strike.
Reach 70% critical chance during a combat.
Use Charged Attack after upgrading it with an Ancient Artifact.
Use Piercing Attack after upgrading it with an Ancient Artifact.
Use Knockdown after upgrading it with an Ancient Artifact.
Use Long Shot after upgrading it with an Ancient Artifact.
Find all 4 Ancient Artifacts.