Perception is a multi-purpose skill. It deals with a number of things, basically your ability to see things around you which happen either very quickly, or are hidden. Perception is used to discover hidden people and objects, when avoiding an ambush, when being tracked, when discerning which way people are heading. In short it is your complete ability to be aware of your surroundings. You will gain specific abilities as your skill at Perception rises.

Ability	Description
Trees	Ignoring or noticing trees.
Looking	Looking in a specific direction.
Glancing	Glancing in a specific direction.
Squinting	Squinting in a specific direction.
Movement	Perceiving direction of movement.
Info	Gaining information on adjacent locations.
Ignorance	Ignoring runes upon the ground.
Routes	Perceiving exits with greater insight.
Eye	Alertness of the eye to review your surroundings.
Alertness	Awareness of hidden and blended people.
Traps	Sensing the presence of traps nearby.
Netdodging	Dodging webs of restraint and nets.
Fullsight	Sensing movement while using sixth sense.
Hiding	Perceiving hidden items automatically.
Twinkletoes	Fast feet to avoid pits and tremors.
Assessment	Assessing the exact health of CCCs.
Mergers	Sensing merged presences inside the forestland.
RearSense	Sensing malevolent presences.
Lipreading	Reading the lips of those within line-of-sight.
Sense	Entering the sixth sense.
Invisibles	Perceiving invisible or cloaked items automatically.
Breaking	Breaking free of bedazzling and fascination.
Revelation	Revealing farsight and demonic presence.
up to here = Grand-Master + 73%
Fullignore	Ignoring runes shown to you by a runesmith.
Defences	Assessing the defences of a nearby person.
Tracing	Tracing individual movement in an area.
Numbness	Losing all sense of sight and hearing.
Resolve	Determining the resolve of a nearby person.
Discerning	Discerning presences, distant or otherwise.
Innersight	Calling upon divine sight and innersight.
Summarize	Quick glance to gradually assess a victim's inventory.
Tracers	Tracing movement of all associated individuals.