Here is the full list of all 15 Circuit Breakers achievements worth 1,000 gamerscore.
Complete Aldo's challenge board.
Complete Shelby's challenge board.
Complete Samson's challenge board.
Complete Tay's challenge board.
Complete Payne's challenge board.
Complete Charlie's challenge board.
Complete Erika's challenge board.
Get a combo of 300 or more.
Die 200 times.
Complete 8 rooms in Arcade mode with all cores on.
Get to room 50 with 4 players.
Clear 250 rooms.
Get 100,000 total energium.
Kill 2,000 robots.
Defeat 20 bosses.