Use the “Cipher” item (different from the puzzle you are solving) to complete the grid
instantly. Purchase the blueprint of the Cipher item for 500 credits in the market. It
can be crafted with 400 Ferrite, 400 Salvage, and 100 credits with a one minute build
time. Select the button for the instant use of a Cipher within five seconds to get the
“Counter Intelligence” achievement. Note: A set of ten Ciphers can also be used to easily
complete the mastery test from Rank 4 to Rank 5 (hacking multiple terminals within a time
limit).