Ikaros

Your trusted companion and scout, Ikaros can be used to scout an immediate area from the sky, automatically tagging enemies, mark treasures, items of interest (like tablets and Ainigmata Ostrakas), and objectives, even when he has no direct line of sight to said objects or targets.

Ikaros can also focus on targets and see further details like drops, type, and for certain characters, even their Abilities. Ikaros seems to be ignored by enemies so there’s really no danger of him getting shot down.

Take your time when scouting and survey the area of potential targets and loot. Important objects and targets will appear as yellow or white arches in Ikaros’ view. Simply look at that direction until Ikaros marks it for you. You can't call Ikaros in closed spaces like caves or buildings. As such the Assassin Skill "Revelation" will do the job for you. Make sure to learn it as early as possible to make your infiltration jobs easier.