When engaging in combat time is tracked in increments called Rounds. A Round lasts about 10 seconds, or enough time for someone to run across a room and perform one significant action.
During a Round, each side of a conflict acts together. Each individual on a side can act in whatever order they choose, and can move about 40 feet, and perform one significant action (make an attack, use an item, cast a spell, etc.).
Any actions that carry risk require a Save as usual, usually against the creature you’re engaged with.
If it’s not clear which side should act first, make a DEX Save vs the opposition to act before them.
To make an attack, roll your weapon’s damage die. The target of the attack subtracts their armor and reduces their Grit by the remainder. If there is no excess damage, the target was able to avoid or otherwise defend against the attack. If there is more damage dealt than the remaining Grit, the excess damage becomes Direct Damage.
Direct Damage represents the attack making physical contact with the target, and causes a STR Save to avoid Critical Damage.
After receiving Direct Damage, make a STR Save and roll higher than that amount to avoid Critical Damage.
If you suffer multiple attacks simultaneously, make your Save against their combined Direct Damage, rather than making separate Saves. Armor still applies to each attack individually.
If you suffer Critical Damage, step down your STR and suffer any Critical Damage effects from your attackers.
If your STR steps down below a d4 (zero STR) you become incapacitated. An incapacitated creature can only weakly crawl, and will die in an hour without assistance. First aid from an ally gets you back on your feet, but doesn’t restore your STR.
Taking Direct Damage, or trying to step down your die at zero STR is lethal.
If the amount of Direct Damage you received is equal to or greater than the highest value on your STR die, immediately suffer Critical Damage. If the damage in excess of that amount is still equal to or greater than your now lowered STR die, repeat. If it is lower, make a Critical Damage Save as usual trying to roll higher the remaining damage.
If your STR steps below a d4 during this process, you become incapacitated and ignore any remaining damage.
If you make an attack that is at an advantage (against an unsuspecting target, from higher ground, etc.) it is enhanced. Roll a d12 in addition to your other dice, and keep only the highest result.
If you attack while disadvantaged (through cover, while blind, unarmed, etc.) it is impaired. Roll a d4 instead of your other dice.
Attacks with the blast quality affect all targets in the area. This can refer to actual explosions, fireballs, whirling blades, or to a giant swinging a club in a wide arc.
When an NPC faces daunting, terrifying, or dangerous situations they should make a WIL Save to avoid surrender or flight.
NPCs make Morale Saves the first time they take Critical Damage, the first time one of their companions is incapacitated or killed, or if the tide of battle turns against them.
Morale Saves are also made when an NPC is presented with a situation dramatically outside their understanding, or hirelings being asked to put themselves at significant risk.
A Morale Save might be enhanced due to a courageous leader, the promise of significant reward, or being particularly oblivious. It might be impaired due to being directly threatened, a hopeless situation, or the obvious evidence of immediate danger.
Sam and Pete are mid battle against a troll.
Sam: Can I roll between its legs?
GM: Sure, make a DEX Save against it, succeed and your attack is enhanced, fail and it’ll get an enhanced attack against you.
Sam rolls a 5 versus the Troll’s 4 and wins.
Sam: Sweet! I stab it in the back.
Sam rolls a d6 and a d12 for her enhanced attack and gets a 3 and an 11. The Troll has 1 Armor and 2 remaining Grit so 8 Direct Damage is dealt.
GM: Yeah, that’ll do a number on it. You wiped out it’s Grit and it does real damage even through its tough skin.
Sam: My dagger sinks in and I feel it hit something important before I roll away.
Pete: Okay, as I see Sam go in for a stab I fire at its chest, trying to time the shot to match.
Pete rolls a 7, for 6 Direct Damage after 1 Armor.
GM: The arrow thwaps into its muscly pecs.
As the attacks were closely timed, the GM totals of the Direct Damage taken by the troll, 8 + 6 for 14. The Troll has a 10 STR, so it immediately takes Critical Damage and 4 overflows. The Troll rolls his now 8 STR and fails with a 4, suffering Critical Damage again and dropping to 6 STR. It makes a Morale Save, and succeeds with a 5.
GM: You see the Troll stagger from the rapid injuries, but then gathers itself and ROARS still very much in the fight!