Assimilate Your Debriefing...
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	Secret mission 1A ...
	Secret mission 4A ...
	Secret mission 5A ...
	Secret mission 5B ...
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In mission 6A, "Piercing Encounters," when you fight the Borg, let them assimilate the Typhon. Your mission will fail (obviously). Then, choose to not restart the mission. Your debriefing will then come up and it will show Borg machines. Just sit there, and eventually, the Borg machines will take over a large part of your screen.

At the level selection screen, press Up, Left, Down, Right, Up, Right, Up, Down, Left, Up, L1 + R1, L2 + R2 to unlock all levels.

Successfully complete mission 1 in under 5 minutes 2 seconds with more than 40% accuracy.

Successfully complete mission 4 in under 6 minutes 44 seconds with more than 40% accuracy.

Destroy half of the energy plough and use your tractor beam on the second half in mission 5.

Search for the info unit between the two asteroids, near the broken shuttle in mission 5 and use the tractor beam to acquire it.

At the mission briefing screen, press [Left, Right, Up, Down] five times.