Here is the full list of all 34 Galaxy of Pen & Paper +1 achievements.
Reach level 25.
Unlock the Savage class.
Unlock the Medtech class.
Unlock the Negotiator class.
Land on 25 different planets.
Gather 100 minerals.
Play with 4 roleplayers at once.
Create a character with a 9 in any attribute
Complete all quest types.
Choose all different choices for a single event.
Engage a pirate ship and win the battle.
Defeat a boss with a single character alive.
Talk to 50 npcs.
Unlock all optional classes.
Unlock the Heavy class.
Complete 50 side quests.
Finish the game having the Achiever roleplayer in your party.
Reach 100% reputation at the highest Rank.
Unlock all reputation perks.
Gather 99 of any consumable items in your inventory.
Swap a skill after a game over.
Grab some food and place it on your table.
Finish off a space pirate with your special weapon at full charge.
Unlock all metashop items.
Grab all weapon and armor upgrades for a character.
Beat the game.
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.