Hmm I really like these ideas. I might morph them for my sword and sorcery game...
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"Witch Hunter
Witch Hunters replace and progress as Elves except where noted.
Witch Hunters are trained in advanced combat tactics like a Fighter.
Witch Hunters can cast magic-user spells but advance in a spell unique progression.
Witch Hunters begin play with Read Magic and 1 other spell in their spell book.
Spells Per Level
1 2 3 4 5
0
1 1
2 1
3 2
4 2 1
5 2 1
6 3 2 1
7 3 2 1
8 3 2 2 1
9 3 3 2 1
10 4 3 3 2 1
11 4 3 3 2 1
12 4 4 3 3 2
13 4 4 4 3 2
14 5 4 4 3 2
15 5 4 4 4 3
16 5 5 4 4 3
17 5 5 5 4 4
18 6 5 5 4 4
19 6 6 5 5 4
20 7 7 6 5 5
Witch Hunters are trained at tracking and surviving (2 in 6 Bushcraft).
Replaces the Elves Search skill.
Witch Hunters are less often surprised than other classes (1 in 6 chance).
Witch Hunters receive +1 to hit per level (like Fighters) against Magic-users and creatures with magical abilities.
Witch Hunters are able to track magic-user's and magical creature's residual magical energy (using Bushcraft) but only if they have cast a spell or used a magical ability; the following modifiers apply to the check:
-1 if the magic-user/creature cast more than a single spell or used more than 1 ability in the same area
-1 if more than one magic-user or creature is being tracked (if they have also cast a spell or used a magical ability)
+1 for every 6 hours that have passed since casting or ability use as the residual magical energies fade
+2 if the target passes through a secret door (this distorts the magical energies)
+3 if the target passes through a magical portal
The target may use other means to hide their magical trail, it is up to the Referee to determine what the penalty to the check is."
I really really like this one. For a sword and sorcery game though I might re name it warlock or even sorcerer (to mimic an elric type character whos sort of a warrior mage)
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Mountaineer
Mountaineers replace and progress as Dwarves except where noted.
Mountaineers are able to bear incredible burdens; it takes five additional items for a Mountaineer to gain the first encumbrance point.
Mountaineers add their Strength bonus to damage dealt with axes and oversized weapons.
A Mountaineer receives a +1 bonus to their Constitution modifier (so a Mountaineer with a 12 Constitution has a +1 modifier instead of the usual 0 modifier, for example). A Mountaineer also continues to apply his Constitution modifiers, if any, to Hit Points gained after level nine.
Mountaineers add double their Strength bonus to Open Doors when using an axe or crowbar.
Mountaineers scale cliffs and mountainsides and are excellent climbers, starting with 3 in 6 to Climb.
This replaces the Dwarves Architecture skill.
Id call this class Berserker for a sword and sorcery game, but use everything you have written up until the last paragraph. Rather than be able to climb and open stuck doors better, Id give them a berserking ability that gives them a temporary base attack bonus equal to a fighter and bonus HP equal to their level for the duration of one battle, at the cost of -4 AC due to recklessness. And once the battle is over they have -2 to all attack rolls and cannot berserk again until they rest.
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Trailblazer
Trailblazers replace and progress as Halflings except where noted.
Trailblazers have Paralyze, Poison, Device and Magic saves as Clerics; Breath saves as Fighter. Level 0 saves as Fighter.
Trailblazers are quick, they are good with ranged weapons and extremely agile. Trailblazers add one point to their Dexterity modifier and receive one point to their AC when not surprised.
In the wilderness, Trailblazers have an uncanny ability to remain hidden and have a 5 in 6 Stealth skill.
Trailblazers are excellent hunters, trackers and foresters and begin with a 3 in 6 Bushcraft skill.
Trailblazers gain a bonus to their speed as they level up if they are wearing leather armor and unencumbered.
Movement Speed
0 120'
1 130'
2 130'
3 140'
4 140'
5 150'
6 150'
7 160'
8 160'
9 160'
10 170'
11 170'
12 180'
13 180'
14 180'
15 190'
16 190'
17 200'
18 200'
19 220'
20 220'
Id reskin this one as a ranger/woodsmen type. Maybe granting a damage bonus against animals?
Great ideas all around though im a sucker for tinkering.