[General] Enable “All Weapons” in the in-game options menu to equip Ability actions without immediately doing them.
[Fragger] Hold down the Ability button to cook your grenade, giving your enemy less time to run.
[Sawbonez/Sparks] Direct hits with Medpacks will instantly heal a small amount of health.
[Fletcher] Sticky bombs stick to humans, too.
[General] Only one person can accomplish the objective at a time, so leave it to the Objective Specialist if one is nearby.
[General] One dead enemy is better than two wounded enemies. Focus on one enemy at a time until they fall.
[Kira] The Orbital Laser will continue firing even after switching away from the designator.
[General] While sprinting, press crouch just before jumping to long-jump, covering a short distance faster than normal.
[Rhino] The Minigun is powerful, but is not your only weapon. Sometimes a problem is best solved with a shotgun to the face, or pistol parting shots.
[Bushwhacker] Pick up the smoking remains of your destroyed Turret to recover some of the cooldown.
[General] You move fastest with your melee weapon equipped.
[Medics] The healing may not be as rewarding as the hurting, but the former is exponentially more important.
[Medics] Proper healing and reviving triage for the situation can turn a losing battle around.
[General] The EV moves faster as more Attackers congregate around it. The EV also makes beautiful cover, and has a turret on its top.