Here is the full list of all 13 Schrödinger's Cat and the Raiders of the Lost Quark achievements worth 1,000 gamerscore.
Access the Nucleus
Clear up the Higgs Boson's itchy problem
Collect all loose creatures
Help 10 Wosons fall in love
Collect 5 muons
Play the decoy music for more than 30 seconds
Collect 25 electrons
Collect 100 gluons
Carry around loads of one type of quark in your quark army
Save yourself from a harmful landing with a combo (BBB, BBT, TTU, TTT)
Collect 1000 quarks
Get through a critter-filled zone without losing a hit point (tutorial doesn't count)
Clear all the Gluons in one zoo zone