These are the words you may use to unlock things in the vault.

Secret	How to unlock
1st UFO	Type "Neverending"
2nd UFO	Type "Blockbite"
Another Wave	Type "Ahead"
Coin	Type "Sparky"
ILLUMINATI Wave	Type In Sequence: "8, 16, 30, 32, 46, 84"
Lenny Cube	Type "Lenny"
Minion Cube	Type Your Username
Robot	Type "Robotop"
Ship	Type "Mule"
Shy Guy Cube	Type "Spooky"
Trail	Type "Gandalfpotter"