Here is the full list of all 58 Null & Peta -Invasion of the Queen Bug- achievements.
Fix 100 bugs.
Fix 500 bugs.
Obtain the Level 2 Spanner.
Obtain the Level 1 Hammer.
Obtain the Level 2 Hammer.
Obtain the Level 1 Chainsaw.
Obtain the Level 2 Chainsaw.
Obtain the Level 1 Gatling.
Obtain the Level 2 Gatling.
Obtain the Level 1 Cannon.
Obtain the Level 2 Cannon.
Obtain the Chrome Rain Boots.
Obtain the Metal Rain Boots.
Obtain the Rare Metal Rain Boots.
Obtain the Gloves of the Yokozuna.
Obtain the Ultra-Quantum Goggles.
Obtain the Control Band.
Defeated Pleione.
Defeated Taygeta.
Defeated Elektra.
Defeated Merope.
Defeated Atlas.
Defeated the Queen Bug.
Defeated Pleione without taking any damage.
Defeated Taygeta without taking any damage.
Defeated Elektra without taking any damage.
Defeated Merope without taking any damage.
Defeated Atlas without taking any damage.
Defeated the Queen Bug without taking any damage.
Activate Peta Robo Mode 50 times.
Activate Peta Robo Mode 100 times.
Activate Petavity 50 times.
Activate Petavity 100 times.
Find all Event Objects in Akiba.
Find all Event Objects in Siberia.
Find all Event Objects in the Ancient Ruins.
Find all Event Objects in the Amazon.
Find all Event Objects in Africa.
Eat Dark Fried Rice 50 times.
Eat Extra Large Dark Fried Rice 25 times.
Make Dark Fried Rice.
Obtain the Level 3 Spanner.
Obtain the Level 3 Hammer.
Obtain the Level 3 Chainsaw.
Obtain the Level 3 Gatling.
Obtain the Level 3 Cannon.
Defeated Alcyone.
Defeated Maia.
Defeated Alcyone without taking any damage.
Defeated Maia without taking any damage.
Find all Event Objects in East Asia
Find all Event Objects in the West Coast.
Find all Key Items.
Reach the highest possible maximum HP.
Unlock all CGs in the game.
Clear Normal Mode (STAGE 9).
Clear Hard Mode (STAGE 9).
Clear Hell Mode (STAGE 9).