Warhammer Online uses a unique game mechanic called "Tactics" to customize the playstyle of each individual career to suit the player. Players are given a variety of options in choosing Tactics, and those options increase with level. Some tactics are granted through normal leveling, while others are granted by achieving ranks in RvR (realm vs realm) combat. Still other Tactics come from making discoveries in the open world, and earning them through the Tome of Knowledge. Here are some examples of the different tactics that players can learn:
Career Tactics:
Jagged Edge - "Any time you critically hit an enemy they will begin to bleed, suffering additional "x" damage over 9 seconds." This is a Marauder career tactic only.
Rugged - "Increases Toughness by "x". This is a Black Orc career tactic only.
Warped Flesh - "Any time you are struck in combat, there is a 25% chance that you will be surrounded by a barrier which absorbs X damage. Can only trigger once every 3 seconds." This tactic is available to all Chaos careers.
Renown Tactics: Renown tactics are learned from Renown Trainers, and aptly cater to RvR combat. Examples are:
Combat Awareness - Increases XP earned from RvR combat by 5%.
Death Wish - Increases Critical Strike Chance when below half health.
I Hates Stunties - Increases a Greenskins damage vs Dwarfs.
Tome Tactics: Tome Tactics are tactics that are unlocked by making discoveries in the Tome of Knowledge.
Harrier's Kin - Can Approach Animals 50% before engaging. Take 5% less damage from animals. Gain 50% more experience from animals.
The other tome tactics follow this format, only instead of Animals it is humanoids, mythical creatures, undead, etc.