Here is the full list of all 12 Penny Arcade Adventures: Episode 1 achievements worth 200 gamerscore.
Have T. Kemper join the player as a support character.
Do a 3-member Team-Up Attack.
Successfully complete the first episode.
Kill an enemy using T. Kemper's basic attack.
Find and collect all of the hidden collectibles scattered around the game.
Explore the world to find all the robots, and defeat them all in combat.
Only use counterattacks, health items, or distraction items to win one battle.
Fight, and destroy the final Boss without using any healing items.
Play and win the game without allowing a character to die during combat.
Find and use every item in the game at least once.
Kill enough enemies in the game to get the XP necessary to get all party members to Level 15.
Find and kill every possible enemy in the game.