Examples:
A marine can invest 3 Ability Points into
specialist, raising his
specialist tier from 0 to 3, while retaining 1 point in rifleman.
Remember: When you earn a skill tree's tier, you
get all of the abilities
of that tier.
Players
will have 3 Ability Points given to them at creation. They can
unlearn their skill trees if they are in recall.
Unlearning skill trees
is free.
Please see the help files on each tree of your
race for more information.
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Marines
Specialist
Tier 1: Specialist
Tier 2: Medic
Tier 3: Field Engineer
Support
Tier 1: Support
Tier 2: Squad Support
Tier 3: Heavy Weapons
Rifleman
Tier 1: Basic Training
Tier 2: Marksman
Tier 3: Triage Specialist

Aliens
Drone
Tier 1: Egg Drone
Tier 2: Minion
Tier 3: Guardian
Warrior
Tier 1: Scout
Tier 2: Soldier
Tier 3: Praetorian
Evolution
Tier 1: Natural
Tier 2: Evolved
Tier 3: Warden

Predators
Warrior
Tier 1: Weakblood
Tier 2: Skulltaker
Tier 3: Hulij-Bpe Yeyinde
Stalker
Tier 1: Tracker
Tier 2: Ambusher
Tier 3: Nain-desintje-de
Hunter
Tier 1: Initiate
Tier 2: Expert
Tier 3: Zazin
Each skill tree also has a help file.