Destiny 2 Terminal Overload Guide: How To Get Terminal Overload Keys In Lightfall's New Activity

gamespot.com:

Trouble is brewing on the streets of Neomuna, but fortunately, not even an army of time-traveling mechanical aliens and the almighty Shadow Legion of Calus can stand up to a few heavily armed Guardians. Similar to public activities such as Escalation Protocol and Altars of Sorrow, Terminal Overload is a challenging showdown between Cabal and Vex forces that plays out across three stages.

It's a high-level event, you'll want to finish the Lightfall campaign first and power up your Guardian for the battles that lie ahead. Up to six players can participate in Terminal Overload, and with some particularly nasty enemies to deal with, you'll want to ensure that you have a full fireteam ready for all phases of action.

You'll want to make certain that you've reached a sufficient power level for Terminal Overload, as this mode recommends being at high level for the challenges that lie ahead. The current pinnacle cap of Destiny 2 is set at 1810, and that's a level that you've very unlikely to reach in your first week of playing Lightfall. There are ways to level up quickly in Lightfall, and the closer you get to the pinnacle level, the better your overall survivability odds. If you're looking for a guaranteed way to get up to power level 1770 at the very least, playing the Lightfall campaign on Legend difficulty is one of the best ways to do so, as you'll be rewarded with armor and weapons that are way above the current soft cap of 1750 once you're done.

Terminal Overload events take place on Neomuna, in the Ahimsa Peak, Zephyr Concourse, and Liming Harbor sections of the patrol zone, rotating in and out daily. You can check your map for the icon, and to make getting to it easier, you can unlock a landing zone on the Terminal