The most common action to take in combat is the Attack action, whether you are swinging a sword, taking a shot with an auto rifle, or brawling with your fists.

With this action, you make one melee or ranged attack with a weapon you’re wielding. Certain features, such as the Extra Attack feature, allow you to make more than one attack with this action.

Spellcasters, such as Hive wizards, have access to spells and can use them to great effect in combat. Each spell has a casting time, which specifies whether the caster must use an action, a reaction, minutes, or even hours to cast the spell. Casting a spell is, therefore, not necessarily an action. Most spells have a casting time of 1 action, so a spellcaster often uses their action to cast a spell.

In Dungeons & Destiny, this action is almost exclusively taken by monsters, not by PCs. 

Casting a Power—either your tactical, grenade, support, or super Power—is separate from the Attack action. Like spells, Powers might not always cost your action to cast, but by default it is assumed they do. 

When you take the Dash action, you gain extra movement for the current turn. The increase equals your speed, after applying any modifiers. With a speed of 30 feet, for example, you can move up to 60 feet on your turn if you dash.

Any increase or decrease to your speed changes this additional movement by the same amount. If your speed of 30 feet is reduced to 15 feet, for instance, dashing only gets you an extra 15 feet of movement for the turn.

If you take the Disengage action, your movement doesn’t provoke opportunity attacks for the rest of the turn.

When you take the Dodge action, you focus entirely on avoiding attacks. Until the start of your next turn, any attack roll made against you has disadvantage if you can see the attacker, and you make Dexterity saving throws with advantage. You lose this benefit if you are Incapacitated or if your speed drops to 0.

You can lend your aid to another creature in the completion of a task. When you take the Help action, the creature you aid gains advantage on the next ability check it makes to perform the task you are helping with, provided that it makes the check before the start of your next turn.

Alternatively, you can aid a friendly creature in attacking a creature within 5 feet of you. You feint, distract the target, or in some other way team up to make your ally’s attack more effective. If your ally attacks the target before your next turn, the first attack roll is made with advantage.

When you take the Hide action, you make a Stealth check in an attempt to hide, following the rules for hiding (see Visibility and Hiding). If you succeed, you gain certain benefits, as described under Visibility and Hiding.

Sometimes you want to get the jump on a foe or wait for a particular circumstance before you act. To do so, you can take the Ready action on your turn, which lets you act using your reaction before the start of your next turn.

First, you decide what perceivable circumstance will trigger your reaction. Then, you choose the action you will take in response to that trigger, or you choose to move up to your speed in response to it. Examples include: “If the cultist steps on the trapdoor, I’ll pull the lever that opens it,” and “If the minotaur steps next to me, I move away.”

When the trigger occurs, you can either take your reaction right after the trigger finishes or ignore the trigger. Remember that you can take only one reaction per round.

When you ready a spell or Power, you cast it as normal but hold its energy, which you release with your reaction when the trigger occurs. To be readied, it must have a casting time of 1 action, and holding onto its energy requires concentration. If your concentration is broken, the spell or Power dissipates without taking effect. 

When you take the Search action, you devote your attention to finding something. Depending on the nature of your search, the Architect might have you make a Perception check or an Investigation check.

You normally interact with an object while doing something else, such as when you draw a sword as part of an attack. When an object requires your action for its use, you take the Use an Object action. This action is also useful when you want to interact with more than one object on your turn.

If you’re dead and your Ghost is within 5 feet of where you died, your Ghost can use its action to capture your Power. This removes your body from the physical world, as your Ghost uses paracausal properties to store your body, as well as all worn and carried equipment, within a dedicated space in its memory. This ends all ongoing conditions except Exhaustion, which remains as a physical aspect of your body.

Ghosts cannot take the Capture Power action from within the pocket backpack. Once your Ghost has left its pocket backpack after you’ve died, it cannot re-enter the pocket backpack until it has performed the Resurrect action.

If you accumulate three failed RTL saving throws, your Ghost cannot perform the Capture Power action on you.

When your Ghost takes the Heal action, it spends one use of its Restoration feature to help you recover from injuries you have sustained. You recover all health points (but no energy shield points). Your Ghost must be out of its pocket backpack and within 5 feet of you in order to take the Heal action, and your Ghost cannot take the Heal action if it does not have any uses of its Restoration feature remaining.

After capturing your Power, your Ghost may use its action to project your captured Power out of its memory and back into the physical world. You are reborn from the dead, appearing in an unoccupied space within 5 feet of your Ghost. You recover all health points (but no energy shield points) and can immediately take your turn as normal. 

Performing this action also spends one use of your Ghost’s Restoration feature. Your Ghost can’t take this action if it has no uses of Restoration left.