Geralt: The Professional

LocationNameLevel
White OrchardDevil by the Well02
VelenComponents for a Master Armorer
Speak with Fergus, the Blacksmith in Crow's Perch #10
30
VelenJenny O' the Woods
Notice Board in Midcopse

Use Yrden to do more dmg to her
10
VelenThe Merry Widow
Notice Board in Lindenvale
10
VelenMissing Brother
Notice Board at the Inn of the Crossroads #12
33
Velen Mysterious Tracks
Notice Board in Lindenvale
10
VelenThe Mystery of the Byways Murders
Notice Board in Oreton - #9
22
VelenPatrol Gone Missing
Notice Board across from quartermaster's tent at the Niflgaardian Central Army Camp
07
VelenPhantom of the Trade Route
Speak with a refugee in Benkelham
23
VelenShrieker
Notice Board in Crow's Perch #10
08
VelenSwamp Thing
Villager to the west of The Orphans of Crookback Bog
12
VelenWoodland Beast
various Notice Boards in Novigrad and Northern Velen
06
NovigradThe Apiarian Phantom
Notice Board in Beanston

Use 3x Igni and he is dead 😀
16
NovigradThe Creature from the Oxenfurt Forest
Notice Board in Oxenfurt
35
NovigradDeadly Delights
Notice Board in Hierarch Square
15
NovigradDoors Slamming Shut
Notice Board in Hierarch Square
24
NovigradAn Elusive Thief
Notice Board in Hierarch Square
13
NovigradLord of the Wood
Notice Board at the Cunny of the Goose Inn
25
NovigradThe Oxenfurt Drunk
Notice Board near the Oxenfurt Port
26
NovigradThe White Lady
Notice Board between Portside and Glory Gates, south of Novigrad's walls

Like Jenny you can only hit her if she is inside the Yrden Sign
16
SkelligeDragon
Notice Board in Fyresdal
28
SkelligeHere Comes the Groom
Notice Board in Svorlag
19
SkelligeMissing Son
Notice Board in Rannvaig
29
SkelligeMuire D'yaeblen
Notice Board near wharf of Kaer Trolde Harbor
18
SkelligeThe Phantom of Eldberg
Notice Board by longhouse in northwest Arinbjorn
17
SkelligeStrange Beast
Notice Board in Larvik
16