Talk:Spy 2.0/@comment-174.30.20.123-20160308211018/@comment-71.158.167.91-20160310203422

Another approach is to use a Limbo.

For the tower: Rift Walk, then wall climb up the inside of the tower. The laser barriers won't activate because you're in the Rift Plane. Sometimes there will be guards on top of the tower. Use a codex/synthesis scanner to determine their location, and stealth kill them. At most there will be only two guards on top of the tower, unless you raise the alarms. If you do raise the alarms (if this is a Sortie, like yesterday), about 20 guards will spawn and rush you. So don't raise the alarms.

For the submarine tubes:  OP is accurate, but you don't need a grattler. Just find the destroyable boxes for each fan (usually there's four around the fan itself, or a single one on the wall near the fan), and shoot them. A single shot pretty much always suffices. Usually you can take out the boxes without being in the fan's path, but sometimes you will need to briefly move into it to shoot the last couple.

For the last, much less interesting one, there's one guard on the top floor, one on the bottom floor, and two in the same room as the data vault. Usually, the top guard can be ignored, but they'll ususally be facing away as you enter, so you can stealth kill them if you want (I usually do, just to be safe). On the same wall as the stairs, there will be a grate that you can break. Break it, then follow the vent until you get to the next grate. Use your scanner to determine the location of the bottom guard. When they've just passed by the grate, break the grate, then stealth kill them. Hack the door, then use Rift Walk. Once again, the laser barriers will not detect you because you're in the Rift Plane. From here, you can break the grate on the wall or hack the door (both will get you to the same place). Use your scanner to watch the paths of the guards, and when they're both looking away, stealth kill them.

Some more useful tips for Uranus Spying.