Acidum Rifle
Acidum Rifle is a Rare gun that fires acid, which keeps hurting the target after the hit. Its name is Latin for acid. It drops from the Core in the Factory on the Second Sea.
Gun mains use it a lot for its strong normal attack and its stuns, often with Ice, Dark or Lightning. It stays useful against players who lean on Instinct.
Acidum Rifle
What moves does Acidum Rifle have?
Open Moves for what each key does with a clip, Stats for mastery, cooldown and energy, and Break for Instinct. M1 is the normal attack.
Instinct is the dodge ability. A move that breaks it hits through the dodge.
Acidum Rifle moves, mastery and Instinct
Shoots a green acid bullet that poisons the target, so it keeps taking damage after the hit. The bullet also gives a small stun, which helps start or extend a combo.
Shoots a green projectile that explodes after a short time, damaging and stunning enemies. If it hits a player or NPC directly, the bomb latches on and the target cannot get away from it. The leftover gas looks like a skull.
Fires three gas projectiles that deal damage plus poison damage over time, and disable the target's Instinct. It does not stun, but the target cannot attack, dash, use Flash Step or use Air Jump for a short time. You can steer the attack while it lasts.
Shoots a green acid bullet that poisons the target, so it keeps taking damage after the hit. The bullet also gives a small stun, which helps start or extend a combo.
Shoots a green projectile that explodes after a short time, damaging and stunning enemies. If it hits a player or NPC directly, the bomb latches on and the target cannot get away from it. The leftover gas looks like a skull.
Fires three gas projectiles that deal damage plus poison damage over time, and disable the target's Instinct. It does not stun, but the target cannot attack, dash, use Flash Step or use Air Jump for a short time. You can steer the attack while it lasts.
How do you get the Acidum Rifle?
Acidum Rifle drop steps
Go to the Kingdom of Rose. It is on the Second Sea. The Factory is the big round building north-east of the Cafe, and it is a level 700+ location.
Be at the Factory when a raid opens. A Factory Raid starts every 1 hour and 30 minutes after the last one ended. A red message warns you 30 seconds before: "We are breaching the factory in 30 seconds!"
Destroy the Core. It has 200,000 HP and you get five minutes. If it is still standing, the door closes and poison kills everyone left inside; Flash Step gets you out. The Acidum Rifle is a possible drop when the Core is destroyed.
Go to the Kingdom of Rose. It is on the Second Sea. The Factory is the big round building north-east of the Cafe, and it is a level 700+ location.
Be at the Factory when a raid opens. A Factory Raid starts every 1 hour and 30 minutes after the last one ended. A red message warns you 30 seconds before: "We are breaching the factory in 30 seconds!"
Destroy the Core. It has 200,000 HP and you get five minutes. If it is still standing, the door closes and poison kills everyone left inside; Flash Step gets you out. The Acidum Rifle is a possible drop when the Core is destroyed.
How do you upgrade the Acidum Rifle, and what does it give?
Take the materials to a Blacksmith. A weapon can only be upgraded once, and you must upgrade it before you can enchant it. Full details are in the Upgrading guide.
Acidum Rifle upgrade cost
The Blacksmith screen: the upgrade gives +10% damage.
Where to get them: Vampire Fang drops only from Vampires, level 975 enemies inside the cave on Graveyard Island in the Second Sea. The drop chance is about 2%, and a lucky enchantment on your weapon improves it. Leather drops from many common enemies such as Pirates, Brutes, Gladiators and Mercenaries; farm it at Pirate Village.
What are the best Acidum Rifle combos?
These chains are rated Easy or Easy to Medium by players. The Acidum Rifle supplies the stun and the Instinct break in the middle of each chain.
Easy: any stun, Soul Cane and Godhuman
Easy: Ice and Sharkman Karate
- Keys: Ice V > Acidum Rifle X > Acidum Rifle Z > Sharkman Karate X > Sharkman Karate Z > Sharkman Karate C
- Needs: Ice, Sharkman Karate; gun stats.
- Tip: X goes before Z here, so Instinct is already gone when the Spiky Bomb and the Sharkman Karate finish arrive. It can take some practice at first.
Easy: Dark, Soul Cane and Superhuman
- Keys: Dark X > Soul Cane Z > Acidum Rifle Z > Acidum Rifle M1 > Acidum Rifle X > Superhuman C > Superhuman Z > Flash Step > Superhuman X
- Needs: Dark, Soul Cane, Superhuman, Flash Step; gun stats.
- Tip: The normal attack slots in between Z and X and adds its small stun to the chain before X breaks Instinct. It is very hard to escape.
Easy to Medium: Lightning and Godhuman
- Keys: Lightning V > Lightning X > Lightning F (teleport near) > Acidum Rifle Z > Acidum Rifle M1 > Acidum Rifle X > Godhuman Z > Godhuman C > Godhuman X
- Needs: Lightning, Godhuman; gun stats.
- Tip: Any Lightning stun move can start the chain, and Lightning F is optional. X breaks Instinct, so the Godhuman Z and C that follow cannot be dodged with it. You can also use Spikey Trident X after a Lightning stun move to close the distance.
Easy: Ice, Pole and Dragon Talon
- Keys: Ice V > Pole (2nd Form) Z > Pole (2nd Form) X > Acidum Rifle Z > Acidum Rifle X > Dragon Talon X > Dragon Talon Z
- Needs: Ice, Pole (2nd Form), Dragon Talon; gun stats.
- Tip: Z stuns first and X breaks Instinct right after. Make sure both Dragon Talon X and Z connect at the end.
Acidum Rifle strengths and weaknesses
Strengths
General
- High damage and a lot of combo potential, thanks to its stuns and low endlag.
- All moves work very well in the air.
Normal Attack (M1)
- The highest normal-attack damage of any gun, with good range.
- Extremely high damage with the Burning Blessing enchantment.
- Easy to land even with moderate aim, and its small stun can start or extend a combo.
- The poison cannot be dodged once it is on the target.
Spiky Bomb (Z)
- A medium stun, and a direct hit latches the bomb onto the target.
Acidic Smoke (X)
- Good range and high damage.
- Stops the target from attacking, dashing, using Flash Step or Air Jump for a short time.
Weaknesses
General
- Rubber users are immune.
- All moves are slow.
Normal Attack (M1)
- Its range was shortened in Update 24.
Spiky Bomb (Z)
- A very small hitbox, so it is very hard to hit from afar.
Acidic Smoke (X)
- The damage over time is rather hard to pull off, and the move does not stun.
Verdict
Pick the Acidum Rifle if you are a gun main who wants a strong normal attack, easy stuns and a reliable Instinct breaker for combos. Skip it if you want fast moves, since every move on it is slow.
Acidum Rifle tips and tricks
- Open with X against Instinct users: it breaks Instinct no matter what. Follow it with a stun, such as Soul Cane Z for a gun main, and then your combo.
- Use the normal attack as a combo starter: its small stun can start or extend a chain, and it is easy to land.
- Fire Z from close range: its hitbox is very small, so stay near the target and aim for a direct hit so the bomb latches on.
- Fix the arm glitch: the rifle can look broken in front of your character. This comes from your avatar's arms, so changing them fixes it.
Acidum Rifle showcase video
Acidum Rifle showcase video
Video by Antiimajes on YouTube: a showcase of the revamped Acidum Rifle, recorded in December 2024, at Update 24.
What changed in the Acidum Rifle updates?
The Acidum Rifle arrived in Update 8 and was revamped in Update 24, so older guides describe a longer-range normal attack with knockback.
- The Acidum Rifle was revamped. The normal attack got a shorter range and its knockback was removed.
- The Acidum Rifle was added to the game.
