Feats in Darkmatter d20 work much the same as in D&D.  Characters get feats at 1st, 3rd, 6th, 9th, etc., levels.  However, no classes offer extra feats, as Fighters do in D&D.  Therefore, characters are able to buy extra feats by taking Quirks.  Quirks are disadvantages, flaws native in the character.  For every Quirk a character takes, he may take one extra Feat.  A character may never have more than two Quirks.  A character can get rid of Quirks by spending a feat slot.  Below is the complete list of Darkmatter feats.
 

Most of the above feats are explained in the 3rd edition Player's Handbook.  However some of them, and all of the Quirks, are not found there.  These are described below.  Please note that Feats and Quirks marked with an asterix are "background" Feats/Quirks.  This means that they can only be purchased at 1st level, and that, once bought, they cannot be gotten rid of by using a Feat slot.

Feats
Armor Proficiency: armor's Action Check penalty is reduced by 1.
Evasion: Prerequisite Dexterity 12+.  Successful Reflex save for 1/2 damage results in no damage.
Fast Movement: Character's base movement is raised by 10'.
Favored Enemy: When fighting, tracking, or interacting with favored enemy, gains +1 bonus.  Can be doubled up on different or same creatures.
Field of Knowledge: Character is particularly familiar with a class of unusual knowledge, like UFO lore, paranormal activities, etc (not like medicine or computer science).  Character can make a Bardic Knowledge check about info from this field.
Filthy Rich: Character starts with twice normal amount of money.
Good Luck: Player can re-roll one roll per game.
Hidden Identity: The character has no records stored in any country's federal information system.
Paranoid: Character is constantly on the look out for those trying to get him.  He gains a +2 bonus when resisting attempts at fooling him, watching him, or doing anything else without his knowledge.
Psionic Awareness: Character is aware of psionics, and can detect the with a Wisdom check against a difficulty of 10+ the psychic's skill rank in that psychic ability.
Psionic Resistance: Character gains a +2 bonus to resisting psychic powers.
Psychic: Character gains access to one psychic power.  See the Psychic Abilities for Darkmatter d20 section.
Slippery Mind: As the Rogue ability in the PHB.
Sneak Attack: Character can attack those who don't see him for +2d6 damage.
Superstitious: Gains a +2 bonus to saves and checks against Arcane and Faith magic directed against him.
Track: Uses Search skill instead of Wilderness Lore.
Uncanny Dodge: Character retains Dexterity bonus to Armor Class even if surprised.
Vitality: Character gains 1 Wound point.
Weapon Proficiency: Character learns to use one additional type of weapon i.e., Pistol, Rifle, Submachine Guns, Heavy Weapons, Bows, Crossbows, Knives, Clubs, Spears, Swords, Axes, or any other type.

Quirks
Abducted: Character was abducted by aliens.  He must make a Willpower check at DC20 to remain in the presence of aliens without running away in fear.
Clueless: Character thinks he is good at one skill, but is not.  He gains a -2 to checks with that skill.  It cannot be a specific example of a cascade skill such as Knowledege or Craft.
Clumsy: Character has a -2 to Reflex saves.
Criminal: Character is wanted by one or more law enforcement organizations for a crime.
Cursed: Character is hexed.  He gains a -1 penalty to all Saving throws.
Dilettante: Character cannot focus on any skill.  Treats all skills as non-class skills in relation to how many ranks can be bought in that skill.
Dirt Poor: Character starts with 1/2 normal money.
Fragile: Character suffers a -2 to Fortitude checks.
Illiterate: Character is illiterate, as the Barbarian in the PHB.
Oblivious: The character is unaware of his surroundings, and suffers a -2 to Spot and Listen checks.
Obsessed: Character suffers a 5% experience penalty from any situation that does not involve him pursuing his own personal obsession.
Old Injury: Character either a)suffers -5' movement a -2 to Reflexes saves (crippled leg), b)-2 to Spot checks (one-eyed), or c)-4 to Listen checks (deafened).
On Record: Character is on record with the government, either for a previous crime, or because he used to work for them.
Phobia: Character must make Will save DC20 to resist running in fear from the object of his fear.
Rebellious: When negotiating with authority figures, character suffers -2 to reaction checks.
Slow: Character gains -10' to move.
Spineless: When confronted with violence, character must make Will save DC15 or run away in fear.
Temper: When angered (at GM's discretion), character must make Will save DC15 to keep from attacking the thing that is making him angry.
Weak-willed: Character suffers a -2 to Will saves.
Wild Talent: Character must have a Psychic power.  Power activates randomly, with a 1/20 chance very hour.  Can regain control with a Concentration check DC 10.  Attempts to activate powers add +2 to DC.

The rules above are just a basic guide.  Feel free to develop your own Feats.  If you have any questions or feats of your own please e-mail us.