Duet Night Abyss build calculator

A Demon Wedge costs its Tolerance, which rises with each level for most wedges. In a slot with a Track, a wedge that has one costs half, rounded up. A loadout can't cost more than the unit's capacity, 100 at level 80. A character's ninth slot takes only wedges made for it, and some of those add to the capacity.

Bonuses of the same kind add together, then each kind multiplies. A plain ATK bonus is its own kind, so it multiplies with bonuses to one element's ATK rather than adding to them, and weapon proficiency is a third. Flat bonuses come last. Some wedges only work with enough wedges of one Track in the same loadout, and the calculator leaves them out until they do.

A crit adds CRIT Damage less 100% for each crit level, and CRIT Chance over 100% guarantees the extra levels, so the average hit is 1 + (CRIT Damage - 1) × CRIT Chance times the plain one. The enemy's DEF lets through K / (K + DEF) of the damage, where K is 300, less 10 for every level you are below the enemy.