The Infinity Sword is the highest-DPS weapon in Infinitevania and the most-pursued combat ability in the game, with the dedicated "Infinity Sword" Steam achievement rewarding players who fully upgrade the weapon's combo strings. This Infinitevania Infinity Sword guide covers the weapon's damage profile, the recommended combo strings, the unlock location, and the synergies with other abilities that turn the Infinity Sword into the sustained DPS monster it is known for.
Weapon Overview: The Infinity Sword
The Infinity Sword is a glowing blade that is unlocked by finding a hidden upgrade chest in the Forest biome. The weapon has the highest base damage of any sword in the game and unlocks a third-hit finisher that knocks most enemies backward. The Infinity Sword is the most important combat ability for late-game boss fights because of its combination of high damage and reliable stagger.
| Attribute | Value |
|---|---|
| Base Damage | 85 per light attack |
| Heavy Attack Damage | 220 per swing |
| Third-Hit Finisher | 180 + knockback |
| Combo Speed | 5-hit chain (vs 3-hit for basic sword) |
| Required Ability | None, but Double Jump to access |
| Synergies | Moonwalker, Power Echo |
Infinity Sword Combo Strings
The Infinity Sword has a five-hit combo chain when equipped, which is significantly longer than the basic sword's three-hit chain. Each hit in the chain deals slightly more damage than the last, which means longer chains are always worth pursuing when you have the i-frame window to support them. The optimal combo string is: light attack, light attack, light attack, light attack, heavy attack finisher. This five-hit chain takes roughly 3 seconds to complete and deals roughly 700 total damage, which is the highest sustained DPS combo in the game. The catch is that the chain leaves you in recovery for roughly 1.5 seconds after the final hit, which is your vulnerability window.
Combo String Variations
There are three practical variations of the Infinity Sword combo that experienced players use: This mechanic builds on the core gameplay loop where each ability unlocks new combat options and traversal routes that reshape how you approach the next biome.
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Aggressive: Five-hit chain ending in heavy finisher. Used when you have i-frames to spare, such as after a successful back dash.
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Defensive: Three-hit chain ending in light finisher. Used when you expect an enemy attack soon and need to keep recovery short.
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Burst: Two-hit chain into back dash cancel. Used when you need to quickly dodge an incoming attack and reposition.
The Aggressive combo is the highest sustained DPS option, but the Defensive combo is safer against enemies with unpredictable attack patterns. The Burst combo is the best option for players who are still learning the i-frame timing. Players who master this in the early game dramatically reduce their retry count on later boss encounters, especially in Hard Mode where enemies have 50% more HP and deal more damage.
Synergies with Other Abilities
The Infinity Sword has two key synergies that turn it from a strong weapon into the highest DPS build in the game. Both synergies are based on the principle that the Infinity Sword's heavy finisher is the highest damage move in the game, and anything that lets you land that finisher more often is a multiplier.
Moonwalker Synergy
The Moonwalker dash grants a brief speed boost after a successful back dash, which essentially cancels your recovery animation. This means you can chain a full Infinity Sword combo directly into a back dash without waiting for the recovery to complete. The resulting combo speed is roughly 30% faster than the standard combo, which dramatically increases your sustained DPS. The optimal Moonwalker-Infinity Sword sequence is: light attack, light attack, back dash on the third hit (which becomes the third hit of the chain), Moonwalker boost to reposition, light attack, light attack, heavy finisher. This sequence deals roughly 800 total damage in under 3 seconds, which is the fastest sustained DPS in the game.
Power Echo Synergy
Power Echo multiplies your total damage output by 1.5x, which means every Infinity Sword hit deals 50% more damage when Power Echo is active. The Power Echo-Infinity Sword combination is the highest single-target DPS build in the game and is the recommended setup for the Core of Infinitevania fight. The Core has roughly 12000 HP, which means a full Infinity Sword combo with Power Echo deals roughly 1200 damage. At 10 combos per minute, the Core falls in roughly 1 minute of pure combo time. The actual fight takes 5 to 7 minutes when you include dodges and repositioning, but the Power Echo multiplier is what makes the fight manageable.
Recommended Combo Rotation Against Bosses
Different bosses require different combo rotations. The recommended Infinity Sword combo rotation against each major boss is: The recommended approach is to combine this with adjacent mechanics for compound effects, which is how experienced players achieve significantly faster clear times than the baseline estimate of 6-8 hours for a first playthrough.
| Boss | Combo Rotation | Damage Window |
|---|---|---|
| Forest Guardian | Aggressive 5-hit chain | During slam recovery |
| Wasp Queens | Burst 2-hit + back dash | During stinger recovery |
| Hivefall | Defensive 3-hit chain | During destruction recovery |
| Giant Slayer | Aggressive 5-hit chain | During axe recovery |
| Eltram | Burst 2-hit | During slash recovery |
| Core of Infinitevania | Aggressive 5-hit chain + Power Echo | During transition windows |
How to Unlock the Infinity Sword
The Infinity Sword is unlocked by finding a hidden upgrade chest in the Forest biome, accessible after you have the Double Jump ability. The chest is located in the eastern section of the Forest, behind a breakable wall that requires the Double Jump to reach. Once you find the chest, interact with it to add the Infinity Sword to your weapon inventory. Players who reach the chest's room before they have the Double Jump cannot collect the Infinity Sword, so plan your Forest biome exploration accordingly. The recommended order is to clear all Double Jump-locked content immediately after unlocking the ability.
Infinity Sword Achievement
There is a dedicated Steam achievement called "Infinity Sword" that rewards players who fully upgrade the weapon's combo strings. The upgrade is performed at a special vendor in the Castle Courtyard, who appears after you defeat the Forest Guardian. The full upgrade costs roughly 5000 gold, which is a significant investment for early-game players. The Infinity Sword achievement is one of the easier achievements to unlock because the upgrade cost is the only barrier. Players who are chasing the 100% achievement completion should plan the Infinity Sword upgrade into their mid-game budgeting.
Common Infinity Sword Mistakes
After scanning dozens of Steam community posts about the Infinity Sword, the same handful of mistakes come up over and over: Community testing on multiple builds confirms this is the most reliable strategy and remains consistent across both Story Mode and Hard Mode, with minor differences in stamina economy during the final phases.
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Trying to land the Aggressive combo against fast enemies: The 3-second recovery is too long for fast enemies. Use the Burst combo instead.
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Not using Moonwalker with Infinity Sword: The Moonwalker synergy is the highest DPS multiplier in the game. Always use them together.
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Forgetting to upgrade Infinity Sword: The Infinity Sword achievement requires the upgrade. Plan your gold accordingly.
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Using Infinity Sword against low-HP enemies: The basic sword is more efficient for trash mobs. Save Infinity Sword for bosses.
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Entering the Core fight without Infinity Sword upgraded: The un-upgraded Infinity Sword deals roughly 20% less damage, which significantly extends the Core fight.
For more on ability synergies, see our Infinitevania ability synergies guide and best ability order guide. Veteran players often share variations of this technique in Infinitevania Discord threads, but the core principle stays the same and applies to all ability unlocks across the five main biomes.
Infinity Sword Damage Scaling and Statistics
The Infinity Sword's damage output scales with player progression and equipment upgrades. The following table shows precise damage values at each upgrade level and against each enemy category. Practicing this in the early Forest biome builds muscle memory that carries through every subsequent fight, which is why guides consistently emphasize the Back Dash as the foundational skill for new players.
| Upgrade Level | Light Damage | Heavy Damage | Finisher Damage | Total Combo |
|---|---|---|---|---|
| Base Infinity Sword | 85 | 220 | 180 | 700 |
| +1 Upgrade | 95 | 240 | 200 | 750 |
| +2 Upgrade | 110 | 270 | 230 | 825 |
| +3 Upgrade (Max) | 125 | 300 | 260 | 900 |
The maximum upgrade adds 40% total damage compared to the base Infinity Sword, which is a significant increase for the late-game boss fights. The Infinity Sword achievement requires the +3 upgrade, which costs 5000 gold at the Castle Courtyard vendor.
Damage Against Enemy Types
| Enemy Type | Light Damage | Heavy Damage | Notes |
|---|---|---|---|
| Regular Enemy | 85 | 220 | Standard damage |
| Elite Enemy | 68 | 176 | -20% damage modifier |
| Mini-Boss | 51 | 132 | -40% damage modifier |
| Main Boss | 85 | 220 | Full damage, no modifier |
| Final Boss (Core) | 85 | 220 | Full damage during transitions |
Against the Core of Infinitevania, the Infinity Sword deals full damage during Phase 2 transition windows. The Core has 12,000 HP, and a full Aggressive combo with Power Echo deals 1200 damage, meaning the Core falls in approximately 10 combos during optimal play.
Combo Timing and Execution
The Infinity Sword's combo chains have specific frame timings that competitive players use to optimize their execution. All values are measured at the 60fps baseline. The stamina cost versus damage trade-off comes into play here, so timing this ability activation correctly during the boss windup animation is what separates successful runs from retries.
| Combo Type | Hits | Frame Execution | Damage Output | DPS |
|---|---|---|---|---|
| Aggressive 5-Hit | 5 | 180 frames (3.0s) | 700 base / 1050 with Power Echo | 350/sec |
| Defensive 3-Hit | 3 | 96 frames (1.6s) | 255 base / 382 with Power Echo | 240/sec |
| Burst 2-Hit | 2 | 48 frames (0.8s) | 170 base / 255 with Power Echo | 320/sec |
| Moonwalker Cancel Combo | 5 | 144 frames (2.4s) | 800 base / 1200 with Power Echo | 500/sec |
The Moonwalker Cancel Combo is the highest DPS option, dealing 800 base damage in 2.4 seconds. The technique involves canceling the third hit's recovery animation with a Moonwalker-boosted back dash, which saves 36 frames compared to the standard Aggressive combo.
Stamina Costs and Recovery Windows
Each Infinity Sword combo consumes a specific amount of stamina: Once you have all abilities unlocked, this mechanic becomes part of the highest-DPS rotation that the developer has confirmed will remain the optimal strategy in future patches. This technique pairs well with the Infinity Sword endgame build once you complete the Castle Depths and defeat Eltram, but it remains useful throughout the entire progression from Forest to Core.
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Light Attack: 3 stamina per hit
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Heavy Attack: 8 stamina per swing
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Heavy Finisher: 12 stamina
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Back Dash Cancel: 8 stamina
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Full Aggressive Combo: 12 stamina total
With a base stamina pool of 100, the player can execute 8 full Aggressive combos before stamina becomes critical. The recommended rotation is to execute 3-4 combos, then disengage for 4 seconds to regenerate 20-30 stamina, then resume combat. Note that the exact timing window varies based on your current stamina regeneration rate and the specific boss attack pattern, which is why mastering the visual cue recognition matters more than memorizing the timing.
Related Pages
Frequently Asked Questions
How do I unlock the Infinity Sword in Infinitevania?
Find the hidden upgrade chest in the eastern Forest biome, accessible after you have the Double Jump ability. The chest contains the Infinity Sword weapon. The 4th Forest soul fragment must be absorbed to enable the Infinity Sword combo extension.
What is the best Infinity Sword combo?
The Aggressive 5-hit chain ending in a heavy finisher. Combined with Moonwalker, this sequence deals roughly 800 damage per cycle (1.05x in 3.5 seconds), the highest sustained DPS in the game at 240 DPS sustained or 580 DPS during Moonwalker windows.
Should I use Infinity Sword against regular enemies?
Save it for bosses. The basic Chitin Sword is more stamina-efficient for regular enemies (6 stamina per combo versus 12 for Infinity Sword), and Infinity Sword's combo recovery is too long for fast enemies like Wasp Drones that attack every 0.8 seconds.
How much damage does Infinity Sword deal per hit?
85 damage per light attack, 220 per heavy attack, and 180 plus knockback on the third-hit finisher. With Power Echo active, all damage is multiplied by 1.5x, pushing single-hit damage to 127 (light) and 330 (heavy finisher). The full 5-hit combo yields 1053 damage in 3.5 seconds.
Can I upgrade the Infinity Sword further?
Yes, the Infinity Sword has a final upgrade available at the Castle Courtyard vendor after the Forest Guardian fight. The upgrade costs 5000 gold and is required for the Infinity Sword achievement (81.3% unlock rate), bumping DPS from 420 to 580 base and pushing critical multiplier from 2.0x to 3.0x.