Chargen only traits

Certain traits can only be gained during character generation (chargen). A player interested in min-maxing for the long run might be interested in taking these traits when creating their character, since otherwise they will not be able to acquire them in-game.

These traits are those that:

1. Are marked as a Targeted Mutation only. They will not be randomly-acquired via anything other than mutagen/serum from their tree.
2. Are not in any tree.
3. Are marked as a possible starting trait.
4. Are not a prerequisite for some trait that can be acquired outside character generation. If they are, the character can mutate the prerequisite trait if the mutation code attempts to give him the dependent trait.

Some of these traits may be lost in the course of the game, if another mutation that can be acquired during the game cancels them. Such traits may be restored via purifier. Traits that cannot be lost at all are marked with "Cannot be lost" below.

Some professions have a "Profession" trait, like Police Officer. These traits are not listed below, but amount to being a special case of a trait available during chargen that cannot be lost during the course of the game.

List of chargen-only traits

Positive

1. Addiction Resistant
2. Bookworm, Cannot be lost
3. Cannibal, Cannot be lost
4. Drunken Master
5. Fast Learner, Cannot be lost
6. Fast Reader, Cannot be lost
7. Good Memory
8. Optimist
9. Outdoorsman, Cannot be lost
10. Packmule, Cannot be lost
11. Parkour Expert, Cannot be lost
12. Psychopath, Cannot be lost
13. Spiritual, Cannot be lost
14. Strong Back
15. Stylish, Cannot be lost
16. Tough
17. Tough Feet, Cannot be lost

Negative

1. Asthmatic, Cannot be lost
2. Bad Knees, Cannot be lost
3. Clumsy
4. Disorganized, Cannot be lost
5. Far-Sighted, Cannot be lost
6. Fragile, Cannot be lost
7. Frail, Cannot be lost
8. Hates Books, Cannot be lost
9. Hates Fruit, Cannot be lost
10. Hates Vegetables, Cannot be lost
11. Hoarder, Cannot be lost
12. Illiterate, Cannot be lost
13. Imperceptive Healer, Cannot be lost
14. Lactose Intolerance, Cannot be lost
15. Languorous
16. Meat Intolerance, Cannot be lost
17. Savant
18. Thin-Skinned
19. Topographagnosia, Cannot be lost
20. Trigger Happy, Cannot be lost
21. Wool Allergy, Cannot be lost

Non-chargen-only traits that cannot be lost if taken during chargen

Some traits are available outside chargen, but can only be lost via purifier. Purifier will not remove traits taken during chargen, so if these traits are taken during chargen, they cannot be lost, and the character will have them for the remainder of the game.

These traits:

1. Are marked as a possible starting trait.
2. Are in a mutation tree.
3. Have no trait which Cancels them which can be acquired outside of chargen. (Technically, traits can also change to other, more-powerful variants of the same trait, but for the purposes of this list, they'll be treated as not being lost.)

These traits also be interesting to a min-maxer. If taken during chargen, they can mutate their character freely, even without using sources of mutation targeted at a tree, without worrying about losing the positive traits. If a negative trait is taken, there will be no way to rid the character of it.

The various classes of fighting styles are also placed here, since in practice they provide a style that cannot be lost once acquired, and since the styles that they offer can be acquired outside chargen.

List of non-chargen-only traits that can be taken during chargen and cannot be lost

Positive

1. Deft
2. Disease Resistant
3. Gourmand
4. High Adrenaline
5. Indefatigable.
6. Infection Resistant
7. Martial Arts Training
8. Masochist
9. Melee Weapon Training
10. Night Vision. Technically there are traits that can cancel this, but they perform the same role.
11. Poison Resistant
12. Quick
13. Robust Genetics
14. Self-Aware
15. Self-Defense Classes
16. Shaolin Adept
17. Thick-Skinned
18. Venom Mob Protege

Negative

1. Addictive Personality
2. Albino
3. Bad Back
4. Bad Temper
5. Chemical Imbalance
6. Flimsy
7. Forgetful
8. Glass Jaw
9. Jittery
10. Mood Swings
11. Narcoleptic
12. Schizophrenic
13. Weak Stomach, though there is one effective exception. A character who breaks threshold in one of several trees may acquire Intestinal Fortitude, which, though Weak Stomach technically leads to Intestinal Fortitude, removes the effects of the Weak Stomach trait.