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