Here is the full list of all 31 Agent A: A puzzle in disguise (EU) trophies - there are 10 bronze, 15 silver, 5 gold and 1 platinum.
Access the hidden pool door
Disarm the electric pool
Overflow the sink a second time
Open a stone doorway
Give Agent A an 'electrifying' hairdo
Disable the house alarm system
Show us your DJ skills, scratch a record for 10 seconds
Investigate Ruby's phone call records
Look up glissando in a dictionary, you'll know what to do Agent... HINT: start from the marked key
Locate Ruby La Rouge
Infiltrate Ruby's secret lair
Unlock all other trophies to become Spy Master
Hit the briefcase kill switch
Sneak into Ruby's hideout
Uncover Ruby's mission
Download Ruby's mission
Broadcast warning message to Agent B
Find Ruby's submarine
Sabotage Ruby's submarine
Shoot the gun range target 100 times
Make a 'Boing' sound 10 times quickly
Deliver a surprise to Onyx and you'll have an ally for life
Release your latest catch... HINT: not Ruby though
Collect the fish bones a second time
Find every spider web in Agent A
Give Günther (the crazy Norwegian bird) hiccups
The old phone in the shoe trick eh!? Find a shoe phone
Complete all conversations with Trevor
Complete all conversations with Günther
Give your new ally their favourite delicacy, prepared to perfection
Complete Agent A in less than 120 minutes