How to use the Slayer Legends Analyzer

Slayer Legends has dozens of systems that feed the same handful of stats, and the game rarely shows you how they combine. The Slayer Legends Analyzer lets you enter your account once, see every system added up, play your promotion fights before you try them, and get a plan for what to upgrade next. This guide walks through it in the order most players use it.

Before you start: where your data lives

There’s no account and nothing to sign in to. Everything you enter is saved in your browser’s local storage the moment you change it, so closing the tab loses nothing. The flip side is that your profile lives in that one browser: a different device or a private window starts empty. To move it, use Export JSON in the Settings panel and Import JSON on the other browser. Reset profile wipes it and starts over.

You don’t need to fill in everything. Every system starts at zero, so the numbers are correct for what you’ve entered and simply lower for what you haven’t. Start with the systems that matter most at your stage of the game and add the rest over time.

The layout

Six tabs sit along the bottom of the screen: Char, Skill, Equips, Companion, Analysis (the chart icon) and Summon (the market icon). The Settings panel stays on the side whichever tab is open:

• Slayer level sets your Growth skill points, when Training Diary levels unlock, and how strong Latent Power becomes.
• Highest stage reached is what the stages analysis compares your fight with.
• Forest of Circulation level shows your Fountain of Circulation grade: one grade for every 30 levels, so level 240 is grade 9.
• Abbreviate numbers writes every number the game’s way, a letter for each thousand: 1,000 is 1.00A and 1,000,000 is 1.00B.
• Event buffs: Gold Acquisition, Exp Acquisition, Character Attack, Character Health, Normal Monster Damage and Boss Monster Damage, in percent as the event shows them. Each multiplies the stat it names on its own, so the Stats Summary and every fight take them in; leave them at 0 when no event is on.

Char tab

The Char tab covers the systems that belong to the slayer directly.

• Enhance: your level for each enhance stat, plus your Growing Knowledge and Superhuman grades, which set the Death Strike cap.
• Growth: skill points across STR, HP, VIT, CRI, LUK, ACC and DODGE, with Training Diary and Latent Power raising the caps and the value of each level.
• Promotion: your current promotion, the classes you own and their levels, the seven Slayer Promotion Ability rows, the Memory Tree and the Constellation of Light.
• Appearance: the clothing and guild outfits you own. Sweatsuits matter more than the rest because they multiply promotion ability rows.

The numbers behind these systems are in Enhance, Growth, Promotion and Classes.

Skill tab

Click any skill to open its details: level, power at that level, mana cost, cooldown and its Refinement lines. Max skills treats every skill as maxed, which is a quick way to see your ceiling. The tab also holds your five skill presets, Skill Stones, Familiars, Skill Proficiency, Skill Mastery, the Immortal skills and the Seasonal skills. See the skills guide.

Equips tab

Weapons and accessories are laid out by tier and grade: mark each one owned, its level and which is equipped, and set awakening for the whole category. Relics and the Sealed Shrine, spirits with their presets and the Fountain of Circulation effects, soul weapons with their engraving gems, and the Black Orb each have their own section. In a spirit preset the first slot is the partner, highlighted in amber, because its skill effect is 10% stronger. The equipment guide covers how each one scales.

Companion tab

Set each companion’s advancement, level their passives and record their promotion rolls. Every passive shows its current effect and what the next level and maxing it cost. Beasts have their own section: owned beasts, their awaken level and affection. See companions and beasts.

Analysis tab

Analysis puts the fight next to the Stats Summary (Attack, HP, crit, death strike, mana, accuracy, dodge, gold, EXP, boss and normal monster damage, and extra damage for each element) and your Presets.

• Presets has five loadouts. Each saves which skill, spirit, skill stone, beast, familiar and promotion ability preset is on, so one tap switches your whole setup. Include Skills adds the skill preset’s buffs to the Stats Summary.
• Pick the enemy with the checkboxes. Boss monster fights the chosen promotion’s boss for 75 seconds. Normal monster fights one monster of that promotion’s stage and ends when it falls. With neither ticked, the fight runs through the stages, telling you how far your presets reach. Stage farming walks through a stage’s waves until the box breaks. Element restricted sets the enemy’s element.
• Render plays the fight in real time. Analysis shows it as damage over time against the enemy’s HP, with an optional log scale. The Render view shows the battle itself. Both show the same fight, and it resets only when you render again or reload.
• Better Weapon, Better Accessories and Better Class cards show on the right of the render when you own something stronger than what's equipped. Tapping Equip equips it and the cards below move up. Equipping or unequipping anything while the fight plays changes it from that moment on. The life you have stays where it is and only the pool moves, so a bigger pool leaves that much more life missing, which is what Rage reads: dropping your HP gear early for Rage and putting it back plays out as in the game. Right of the familiar, Lowest weapon and Lowest class drop you to the weakest you own in one tap, and the cards put the best back.
• Summon, the market tab at the end of the bar, draws weapons or accessories the way the game does. Set your summon level, how many you have summoned at that level and your light shards, then summon 11 or 33 at a time, or press Auto to keep summoning and Pause or Stop when you have seen enough. Each summon rolls a rarity by that level's chances and a grade inside it (Grade 4 40%, Grade 3 30%, Grade 2 20%, Grade 1 10%). Summons count toward the level, and passing a milestone hands over Ellie's Summon Gift Box: Mythic Grade 1 at levels 5 and 6, two at 7, three half way through 7 and four at 8. A level you start at counts as already collected. Summoning costs no light shards, and the panel keeps a running count of the diamonds it has spent: 500 for 11, 1,500 for 33. Your summon level, progress and shards are saved with your profile.
• Awakening from the panel: Awaken +1★ spends the Mythic Grade 1 in your pile, and the shards where a star needs them, to take the weapon or accessory one star; Awaken to N★ goes as far as what you have summoned allows. This is the estimate's own gear — your profile's awakening and equipment are left alone — so you can summon, merge, break and awaken to see what a star really costs. Clear puts it all back.
• Merging runs all the way up: five of a grade make one of the next, from Common Grade 4 to Mythic Grade 1. Nothing merges on its own — press Merge 5 → 1 and your pile merges as far as it goes, laid out like the Equipment tab, four grades to a row from Common Grade 4. The diamond estimate assumes you will merge, so a summon counts for what it becomes rather than only the Mythic Grade 1 it draws. Break 1 breaks a single Mythic Grade 1 for light shards, as the game has you do them one at a time, and says what that break gave alongside your average and the expected 1,670.
• Awakening is what the Mythic Grade 1 gear is for. Each star of your Immortal weapon or accessory takes one, except the three that change its look (6★, 12★ and 18★), which take four. The last stars take light shards, which come from breaking Mythic Grade 1 gear: 10,000 for 24★, one Mythic Grade 1 and 1,000 shards for each of 25★ to 29★, and 10,000 for 30★. All the way from 0★ to 30★ is 37 Mythic Grade 1 and 25,000 shards. The Summon view shows how far what you have summoned takes your awakening.
• Diamonds to reach a star: pick the awakening you want and the Summon view works out roughly what it costs. Breaking a Mythic Grade 1 gives 1,280 shards a quarter of the time, 1,600 half, 2,080 a fifth, 2,560 4% and 3,200 1% — 1,670 on average — so the shards a star needs become Mythic Grade 1 gear to break. Summoning costs 500 diamonds for 11 and 1,500 for 33, the same 45.45 a summon, and the Mythic Grade 1 chance is the level's Mythic chance times 10% for Grade 1 (at summon level 10 that is one in 6,667 summons). The estimate follows your summon level as it rises and counts the gift boxes on the way.
• Skills below the fight switch between auto and manual when you tap them before rendering. Manual skills light up when ready and wait for you to tap them, so you can play your real rotation, such as pressing Rave as Wrath of Gods starts. Which skills are on auto is saved with the skill preset.

The promotion fights guide explains what the fight models and how to read its result.

Upgrade plans

When a fight ends short, a plan appears under the result:

• The gap: how many times your own damage has to grow to win. Your own damage leaves out spirit skills like Breath of Fire, which take a share of the enemy’s HP whatever your stats are.
• Checks for data that looks missing, like fewer than six familiars, no refinement lines on your attack skills, or no beast picked.
• The plan: the upgrades that get you there, each with its picture, levels and cost, then what the fight deals with all of them.

A practical workflow

1. Enter slayer level, promotion, equipped weapon and accessory, and enhance levels first. They move ATK and HP the most.
2. Add spirits, classes, companions, familiars and your soul weapon. Your Stats Summary should now be close to the game’s.
3. Build the skill preset you actually use, set the skills you press by hand to manual, and render your next promotion.
4. Enter any event buffs that are on under Settings, then follow the upgrade plan, steepest first.
5. Render again after upgrading in the game to see how close you are.

How accurate is it?

Formulas come from the community’s Master Optimizer workbook, and several are checked against values seen in the game. Treat the results as close estimates, not guarantees: the game can change between updates, and promotion boss HP is estimated from the recommended stage. If something doesn’t match, the contact page explains how to report it.