Force

The Force gauge is, similar to Boost, a way for party members in Etrian Odyssey II: Heroes of Lagaard and Etrian Odyssey 2 Untold: The Fafnir Knight to temporarily experience a surge in power. The system operates differently between the original Heroes of Lagaard and its remake.

Force Skills

In Heroes of Lagaard, the Force gauge is filled by different amounts depending on the action, and a character can get multiple increases in one turn: using a normal attack(+1), defending(+2), using a skill(+2), dealing or taking damage(+2), killing an enemy(+2).

When a party member dies, their Force gauge is reset. Escaping from battle removes 5 Force from all party members. Returning to town resets the Force gauges of all party members.

Once the gauge is full, their Force skill becomes available. Every class has a different Force skill related to their skillset, and it's available to use from the start.

Class	Force Skill	Description
Landsknecht	All-Out	Powerful cut attack to all enemies.
Survivalist	Airwalk	Raises the party's turn speed and evasion for 5 turns.
Protector	Painless	Negates all attacks on the party this turn.
Dark Hunter	Dominate	Fully binds 1 enemy. Low turn speed.
Medic	H. Touch	Fully heals and revives the party, dispelling all ailments on them.
Alchemist	Eschaton	Strong untyped attack to all enemies.
Troubadour	Crusade	Raises the party's ATK, DEF, and max HP for 5 turns.
Ronin	Issen	Slow but powerful cut attack to all enemies, may instakill.
Hexer	Caprice	Attempts to inflict all ailments to all enemies.
Gunner	Riot Gun	Powerful and fast stab attack to 1 enemy. Guaranteed stun.
War Magus	Invoke	Fully heals the party and raises their elemental defense.
Beast	Salivall	Heals all allies and cures their ailments.

Force Boost and Force Break

In The Fafnir Knight, the Force system is reworked, and split into two skills: Force Boost and Force Break. This reworked Force system is also reused in Etrian Odyssey Nexus.

Force Boost is a 3-turn buff that greatly affects the party member's performance in battle. It is counted separate from a buff, meaning it cannot be dispelled normally and doesn't occupy a buff slot. Enabling Force Boost also doesn't consume the user's turn, so they are free to act after switching it on.

Party members have their Force Gauge filled by a random amount between 5% and 15% after performing an action, and dying halves their current amount of Force. Unlike before, returning to town fully restores the party's Force Gauges. Using a Force Boost requires a full Force gauge, and when it expires (be it by turn limit, by death or by ending the battle), the party member's Force Gauge is fully depleted.

Force Break is a powerful skill that can only be used during a Force Boost. It is also very fast, often activating first in the turn and usually can only be outsped by other Force Breaks from faster characters. In exchange, it destroys the character's Force gauge, prematurely terminating Force Boost and also denying access to Force Boost or Break until the party returns to town. There are a few means of repairing a broken Force gauge in the middle of an expedition, but such means are often rare or difficult.

The Fafnir Knight

Class	Force Boost Force Break	Description
Landsknecht	Full Charge	For 3 turns, normal attacks and Sword/Axe skills always do critical hits.
	Full Gain	Powerful melee cut attack to one enemy.
Survivalist	Illusion Step	For 3 turns, raises evasion and adds a follow-up attack to Bow skills.
	Summer Rain	16 random ranged stab attacks across all enemies. Max 4 hits per enemy.
Protector	Shield Protect	For 3 turns, allies defended by Guard skills take even less damage.
	Perfect Defense	Nulls all attacks to the party this turn.
Dark Hunter	Trance	For 3 turns, doubles all damage dealt to bound or ailing enemies.
	Rose Prison	Powerful melee cut attack to one enemy, may inflict head/arm/leg bind and poison.
Medic	Steady Hands	For 3 turns, increases the strength and speed of Healing skills while halving their TP cost.
	Medical Miracle	Revives and fully heals all allies, and cures all ailments and binds.
Alchemist	Analysis	For 3 turns, increases damage done when hitting elemental weaknesses.
	Eschaton	Powerful ranged almighty attack to all enemies.
Troubadour	War Song	For 3 turns, buffs on the party will not lose duration and cannot be dispelled.
	Crusade	Greatly increases the party's attack and defense this turn.
Ronin	Immovable	For 3 turns, Katana skill TP cost is halved and Stance will not lose duration or be dispelled.
	Issen	Powerful ranged cut attack to all enemies, may instakill.
Hexer	Creeping Curse	For 3 turns, increases bind/ailment rate and debuffs on enemies will not lose duration.
	Black Mist	Extends the duration of all binds and ailments on all enemies.
Gunner	Action Boost	For 3 turns, Gun skills activate twice. The second is weaker, but doesn't cost TP.
	Supreme Bolt	Powerful ranged stab attack to one enemy, will stun.
War Magus	War Edge Power	For 3 turns, War Edge skills have their added effects even if their target has no ailment.
	Fairy Robe	Heals the party, cures all ailments, binds and debuffs, and prevents all ailments, binds, and debuffs for the turn.
Beast	Desperation	For 3 turns, triples max HP. Fully heals the user on activation.
	True Endurance	Takes hits for the whole party this turn, prevents ailments and binds to the user, and endures all lethal damage with 1 HP remaining. Melee stab attack to all enemies at end of turn.
Sovereign	Victory Vow	For 3 turns, Order skills affect the whole party and have halved TP cost.
	Proof of Nobility	Restores the party's HP and TP.
Highlander	Hero Battle	For 3 turns, Spear skills are stronger and heals the party when doing damage.
	Gae Bolg	Powerful ranged attack to all enemies that cannot be resisted.
Fafnir	Transform	For 3 turns, increases attack and max HP at the cost of speed, and enables Transform-exclusive skills.
	Ignition Ray	Powerful ranged fire/ice/volt attack to one enemy.
	Akashic Nova	Powerful ranged fire/ice/volt attack to all enemies. Unlocked once fighting the Demi-Fafnir.

Etrian Odyssey Nexus

Class	Force Boost Force Break	Description
Protector	Shield Protect	For 3 turns, the damage reduction of Guard skills is boosted.
	Painless	Voids all damage to the party for this turn.
Medic	Steady Hands	For 3 turns, First Aid skills and act speed are boosted; TP costs halved.
	Healing Touch	Heals HP, revives, and cures party's binds/ailments/debuffs.
Survivalist	Illusory Formation	Raises the party's act speed and evasion for 3 turns.
	Mirage Arrow	Ranged stab attack to 1 enemy. Lowers hit rate and act speed for 3 turns.
Ronin	Musou	For 3 turns, user gains all Stance effects, even when they would normally be lost.
	Issen	Powerful ranged cut to all enemies. May instakill. Instakill rate increases on enemies at low HP.
Gunner	Double Action	For 3 turns, gun skills activate twice. The second is weaker, but costs no TP.
	Riot Gun	Powerful ranged stab attack to 1 enemy. Guaranteed stun.
War Magus	War Edge Power	For 3 turns, War Edge skill effects occur even if the targets have no ailments.
	Fairy Robe	Restores party HP and binds/ailments. Voids negative effects this turn.
Highlander	Hero Battle	For 3 turns, raises spear skill damage. Party recovers HP for damage dealt.
	Gae Bolg	Powerful ranged stab to all enemies. User recovers TP for damage dealt.
Sovereign	Victory Vow	For 3 turns, Order skills affect the whole party and have halved TP cost.
	Proof of Nobility	For this turn, party buffs cannot be lost, and certain ones have double effect.
Ninja	Diversion Gambit	Raises user's draw/evasion rate for 3 turns.
	Toxic Mist	Guaranteed poison on all enemies.
Zodiac	Divination	For 3 turns, Astrology skills are stronger and regain half their TP cost after use.
	Astrosign	Ranged fire + ice + volt attack to all enemies. Reduces party TP cost to 0 this turn.
Farmer	Item Echo	For 3 turns, the effect of a used item may activate a second time.
	Final Secret	Fills party Force Gauges to 100%. May recover gauge even after Force Break.
Shogun	Unified Effort	For 3 turns, increases MAX HP and all ATK for the entire party.
	Decoy Party	For this turn, all allies can negate enemy attacks once.
Landsknecht	Trinity	For 3 turns, increases the all ATK, hit rate, and act speed.
	Full Charge	Nulls attacks on user and increases all ATK/act speed until end of next turn.
Nightseeker	Killing Intent	For 3 turns, increases user's status ailment success rate and all ATK.
	Disaster	Powerful cut to 1 enemy. If target has a status ailment, ailment effect lengthens.
Arcanist	Circle Paradise	For 3 turns, user's bind/ailment rate rises, and Circles will not be dismissed.
	Releasal Spell	Removes all enemy buffs, and reverts their bind/ailment resistances to default.
Imperial	Ignition	Cools user's drive blade, preventing it from overheating for 3 turns.
	Conversion	Greatly restores user's TP, beyond MAX.
Harbinger	Unending Armor	For 3 turns, user's Miasma Armor will maintain duration and won't be dispelled.
	Miasma Tsunami	This turn, lowers all enemies' ATK/DEF, evade, act speed, and bind/ailment resistance.
Pugilist	Bind Rush	For 3 turns, raises bind rate and follows up on bound/ailing/stunned enemies.
	Final Blow	Powerful bash attack to 1 enemy. May bind head/arms/legs.
Hero	Brave Heart	For 3 turns, user's afterimages are more likely to spawn and have greater ATK.
	Miracle Edge	Ranged cut to all enemies, then restores party HP beyond MAX.
Vampire	Undying Soul	For 3 turns, the user survives mortal blows with 1 HP.
	Ghastly March	Revives party at 1 HP, then performs a ranged untyped multi-hit attack (allies revived +2) to 1 enemy.