Here is the full list of all 18 The Gallery - there are Episode 1: Call of the Starseed achievements.
Spend the night in the Beach tent.
Complete the Tutorial level.
Smash 15 special bottles.
Listen to all the tapes in the game.
Blink 1000 times.
Douse 6 candles.
Return all the starfish to the sea.
Start a fire on the Beach.
Sink 5 volleyball shots in the Beach hoop.
Hold the radio on the Beach for three minutes.
Shoot 3 bells with one clip.
Light 5 fireworks.
Complete Episode 1.
Complete the Laboratory level.
Complete the Lower Sewer level.
Complete the Upper Sewer level.
Complete the Beach level.
Pick up 4 items.