Difference between revisions of "Perception"

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| [[Port Crag]], east building || Hidden pipe tunnel || 9 Perception || Crawl through to west building, 2nd floor (agility 8; it is from the other direction)
 
| [[Port Crag]], east building || Hidden pipe tunnel || 9 Perception || Crawl through to west building, 2nd floor (agility 8; it is from the other direction)
 
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| [[Fetid Marsh]], east side of [[K5]]/west side of [[L5]] || Hidden map exit(s) || 10 Perception || secret camp with oddity and a tablet
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| [[Fetid Marsh]], east side of [[K5]]/west side of [[L5]] || Hidden map exit(s) || 7 Perception || secret camp with [[Signed Arena Ticket]] Oddity and [[Slimy Tablet Computer]]
 
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|-
 
| [[Fetid Marsh]], SW corner of [[K4]] || Hidden pool jumps || 12 Perception || secret platforms for easier jumping across leper pool
 
| [[Fetid Marsh]], SW corner of [[K4]] || Hidden pool jumps || 12 Perception || secret platforms for easier jumping across leper pool

Revision as of 04:27, 15 March 2021

Perception represents character's ability to discern objects from far away as well as to notice hidden things in their vicinity. It helps the character to use ranged weapons more effectively, as well as detect hidden objects, passages and creatures.

In-game description

Details

Perception determines your character's overall awareness and effectiveness with ranged weapons. It also affects your character's chance to detect hidden passages, objects or stealthed creatures and NPCs. It does not increase your vision or visible range. Perception does not directly affect your chance to hit, but rather increases your ranged weapon skills, which in turn increases your chance to hit with ranged weapons. Melee weapon hit rate is unchanged but increased with melee skill (through strength or dexterity). No items require perception to be used or equipped.

High perception score is important for characters who wish to use ranged weapons or find traps, stealthed enemies and secrets.

Directly affected skills

Other effects

  • Detection
  • Finding secrets (uses perception score instead of detection)

Related feats

See Category:Perception feats.

Related items

Headwear

Suit

Food

Drugs

Perception checks

Tilemarker Perception.png

Discovering secret areas is based on Perception score alone, unlike detecting traps and stealthed characters, which is based on Detection. Discovering some secrets requires prior knowledge instead of Perception score.

In addition to secrets, Underrail: Expedition expansion added visible in-world Perception checks similar to Strength, Dexterity and Agility checks.

Base game

This list is incomplete; you can help by expanding it.
Location Secret Requirement Details
Lower Caves, South Gate Outposts, Area South outposts, inside NW outpost (Forlornstations1.png) Trapdoor 6 Perception connects the two south outposts
Lower Caves, South Gate Outposts, Area South outposts, inside NE outpost (Forlornstations1.png) Trapdoor 6 Perception connects the two south outposts
Lower Caves, South Gate Outposts, Area East outpost, inside the outpost (ForlornStations4.png) Trapdoor 7 Perception connects east and northwest outposts
Lower Caves, South Gate Outposts, Area East outpost, northeast tunnels (ForlornStations4.png) Trapdoor 8 Perception connects east and northwest outposts
Under-passages area 1, near SGS (lup-a1.png) Door 7 Perception secret room along east wall, Strange Comm Device oddity
Lower Underrail, GMS compound level 1 (GammaCompound1.png) Safe 7 Perception secret safe in room near southwest corner
Lower Underrail, GMS compound level 2 (GammaCompound2.png) Secret passage 7 Perception secret room along east wall, Old Data Medium oddity
Lower Caves, east from GMS compound level 3 (cv12.png) Secret crawlspace 8 Perception leads to the back entrance of the raider base
Lower Caves between Mushroom Cove and Junkyard (jyt1.png) Underwater rock bridge 8 Perception leads to a small island
Lower Caves, Siphoner Pools, northeast (jyt3.png) Underwater rock bridge 8 Perception leads to the northeast corner of the cave
Silent Isle, southeast (si1.png) Underwater rock bridge 7 Perception leads to a small island with a corpse
Junkyard, Security control room of Depot A east area (ojy2.png) Secret door 10 perception shortcut bypassing the turrets
Lower Underrail area 6, Lunatic camp (lu-a6.png) Hidden stash 8 Perception secret footlocker near rock pile
Upper Caves, south of Milton's camp (lux-a10.png) Underwater rock bridge 7 Perception shortcut between the north and south bank of the river
Upper Caves, ironhead camp, north of the Bunker (Lux-b16.png) Hidden stash ? Perception NW corner of map, through the backside of the camp
Lower Caves, south of Crossroad Caves (cv2.png) Trapdoor 8 Perception connects southwest and southeast corner, locked box with random psionic mentor
Lower Caves, south of Crossroad Caves (cv2.png) Underwater rock bridge 7 Perception shortcut bypassing siphoners
Lower Caves, south of Camp Hathor (cv19.png) Underwater rock bridge 7 Perception shortcut bypassing rathound nest
Lower Caves, Rathound King Lair (rkl2.png) Door Quest trigger shortcut leading outside if you offer to kidnap Sarine or negotiate a truce with Camp Hathor
Lower Caves, Rathound King Lair, outside (cv21.png) Door Quest trigger shortcut leading to the lair if you offer to kidnap Sarine or negotiate a truce with Camp Hathor
Lower Underrail, Abandoned Warehouse (aw1-1.png) Secret crawlspace 7 Perception secret ventilation shaft section with a footlocker and a rathound
Rail Crossing, behind bar (rc1.png) Secret door 7 Perception leads to Deacon's shop
Rail Crossing, Buzzer's Shop's ventilation shafts (rc_shop 3.png) Hidden Ventilation Shaft 7 Perception secret ventilation shaft section with Hardware Bug
Lower Underrail, The warehouse from Dude's vision (lu-b4.png) Secret crawlspace Quest trigger leads to the lower level of the warehouse during Dude's quest
Free Drones Base, east room Trapdoor 11 Perception leads to the ventilation system
Upper Caves, north from the Hanging Rat bar (lux-c2.png) Hidden stash 11 Perception secret stash inside rock pillar (not visible on the linked map)
Foundry, Evelyn's home (fo3.png) Trapdoor 10 Perception connects Evelyn's house and bunker
Foundry, Evelyn's home (fo3.png) Secret crawlspace Quest trigger leads to Evelyn's bunker if a male player character has a drink with her
Lower Underrail, cave west of Foundry (lu-b22x.png) Hidden stash 10 Perception secret stash inside rock pillar
Core City, Drop Zone (cc15.png) Secret door Quest trigger or 6 Perception leads to Bogdan's hideout, can be found with perception or by learning about it from Kupusije during Find Bogdan, or with perception after starting Sewers generator/Retrieve ICPD
Core City, inside one of Drop Zone buildings (cc5_1.png) Trapdoor 8 Perception leads to the basement
Core City, north Core City Sewers (cc_s2.png) Door 8 Perception leads to a secret room on the west side
Core City, northwest Core City Sewers (cc_s6 2.png) Switch Quest trigger opens door to Acid Hunters' hideout during the Look for Cornell quest
Upper Underrail, east of Notus Living Block (up3x.png) Trapdoor 7 Perception connects trapdoor and a Lunatic base
Upper Underrail, inside Panacea Lab (plb.png) Switch 8 Perception opens door to the room in the northeast corner
Institute of Tchort, utility section, northeast corner (tch-util3.png) Ventilation Shaft 8 Perception connects west wing and utility section
Institute of Tchort, west wing, in coil spider room (tch-ww2.png) Ventilation Shaft 7 Perception connects west wing and utility section
Institute of Tchort, Harpocrates Station, north room (tch_met.png) Secret crawlspace Quest trigger leads to the ventilation system during Track down Rassophore Nevil
Institute of Tchort, Upper Underrail Ventilation System (tch_mv1.png) Secret crawlspace 8 Perception secret ventilation shaft section with a box
Institute of Tchort, Upper Underrail Ventilation System, southwest room (tch_mv1_2.png) Secret trapdoor 10 Perception leads to hidden basement
Deep Caverns, lake, northeast bank (dc-lk.png) Underwater rock bridge 7 Perception leads to a small island with hackable box
Deep Caverns, lake, southwest islet (dc-lk.png) Sniper rifle 10 Perception reveals Black Arrow sniper rifle
Deep Caverns, Hollow Earth (dc-la2.png) Secret crawlspace 8 Perception secret entrance to the small building on the east
Deep Caverns, checkpoint between Caerus and warehouses (dc-cp1.png) Underwater rock bridge 8 Perception leads to the east bank of the lake
Deep Caverns, Warehouse Block 2, south toxic storage (dc-wh3.png) Trapdoor 8 Perception leads to lower level, Electrokinetic Imprint mentor
Deep Caverns, Caerus Residential, northwest building, second floor (dc-res2 2.png) Ventilation Shaft 10 Perception leads to a cavern with Gunter Vasilica, Pseudo-spatial Projection mentor, and Regenerative Mixture
Deep Caverns, Caerus Residential, west apartment (dc-res3.png) Safe 6 Perception secret (empty) safe
Deep Caverns, Arke Power Station, utility section toxic storage (dc-pp_ut.png) Trapdoor 11 Perception connects toxic storage and storage room, random psionic mentor
Deep Caverns, Arke Power Station, utility section storage room (dc-pp_ut.png) Trapdoor 10 Perception connects toxic storage and storage room, random psionic mentor
Deep Caverns, Deep Mushroom Forest (dc-fs4.png) Secret tunnel 9 Perception leads to the northwest corner and a skeleton

Expedition

This list is incomplete; you can help by expanding it.
Location, Underrail Secret Requirement Details
The Rig, room #2 Note (The Rig) 5 Perception under the bed
Chancer's Bay, NE map Hole through wall of shack 10 Perception biohazard boots, mutants
Isaac's River, northernmost map Hidden stash 10 Perception stash in north wall of cave
Core City Docks, empty room next to Ray's shop Vent in north wall ? leads into Ray's shop, dying burglar
Dude's House - Core City Cracked floor panel/wall safe ? key to wall safe/the safe itself
Dude's House - Caves Footlocker under bed 9 Perception psionic mentor
Grey Army Base, two rooms east of the rift Secret trapdoor 8 Perception electronic components
Grey Army Base, 2nd floor Wall safe 9 Perception secret safe in north wall of northwest room
Grey Army Base, 2nd floor Secret crawlspace 9 Perception Connects northern and southern parts of the ventilation system
This list is incomplete; you can help by expanding it.
Location, Black Sea Secret Requirement Details
Black Sea (E4), north side of island Entrance to cave 11 Perception entrance to pirate prison sewer, boss hermit crab
Siphoner Pools (Black Sea) Underwater rock bridge 7 Perception leads to a lingula plant and a random treasure "crevice"
Siphoner Pools (Black Sea), west chamber Buried box 11 Perception SGS credits, Charons, UN dollars
Black Sea (C8), hopper island cave, north wall, west side Hidden stash 9 Perception secret stash in cave wall
Mutie Refuge, crane room Hidden vent shaft 7 Perception secret vent shaft through wall into crane room
West Storage Depot, lvl 3 by the elevator Hidden vent shaft 8 Perception secret vent shaft to blocked room
Crimson Meadow Horticulture Center lower floor, west section, north side Hidden vent shaft 11 Perception secret vent shaft through wall
Black Sea (I1), outside the Health Center, SE corner Hidden hole through wall 10 Perception secret passage to hidden room
Black Sea (I2), tower north of Health Center, 2nd floor Hidden corpse 9 Perception corpse with loot (can be looted without detection)
Nexus of Technology, level 1, SE room Hidden wall safe 9 Perception loot
Port Crag, east building Hidden pipe tunnel 9 Perception Crawl through to west building, 2nd floor (agility 8; it is from the other direction)
Fetid Marsh, east side of K5/west side of L5 Hidden map exit(s) 7 Perception secret camp with Signed Arena Ticket Oddity and Slimy Tablet Computer
Fetid Marsh, SW corner of K4 Hidden pool jumps 12 Perception secret platforms for easier jumping across leper pool
Map M7 (two maps east of the Nexus), NW corner Hidden passages 9 Perception secret passages to/from hidden room, shortcut past creepers