Ship Cheats
Several codes make ships that would be otherwise difficult to unlock in "Star Trek: Tactical Assault" for the PSP immediately available. To unlock all ships for all missions, press "Up," "Down," "Left," "Right," "Select," "Start," "X"
while on the main menu. To unlock all ships in the Skirmish and Multiplayer modes, press "Up," "Down," "Left," "Right," "Select," "Start," "Square" from the main menu.
Missions
An easy way eliminate to make all missions playable and eliminate the need to pass a level to unlock the next is to use this cheat: Press "Up," "Down," "Left," "Right," "Select," "Start," "Start" from the main menu. Doing so will unlock all missions. Once you've input this cheat, move to the briefing screen to select your mission.
Crew Upgrades
You can use promotion points on items, characters and accessories in "Star Trek: Tactical Assault," including bonus crew members. A simple way to upgrade your crew is to press "Up," "Down," "Left," "Right," "Select," "Start," "Select" on the main menu screen. This will award you five promotion points, which you can then spend on crew upgrades.
Klingon Campaign
The PSP version of "Star Trek: Tactical Assault" offers an alternative Klingon-themed story mode. To unlock this mode for play, press "Up," "Down," "Left," "Right," "Select," "Start," "Triangle" on the main menu screen. The Klingon story mode includes alternative levels, worlds and villains, plus expanded ship and accessory options.