Item (Risk of Rain)

Passive Items
The majority of items in risk of rain are equipped passively. They do not appear to have a stacking limit, however their effects seem to degrade exponentially. For instance, if one acquires a Monster's Tooth, an item which gives 10 HP on kill, then obtain another, you will recieve 15 HP on kill. Further testing is needed to confirm the formula for item effects.


 * The Current List of Passively Equipped Items is as follows

Damage increase/Addition.
Brilliant Behemoth — All your attacks explode for a bonus 20%.

AtG Missile Launcher Mk. 1 — A 10% chance on hitting an enemy to fire a missile that deal 300% damage.

'''AtG Missile Launcher Mk. 2''' — A 7% chance on hitting an enemy to fire three missiles that deal 300% damage.

Golden Gun — Deals bonus damage per gold, up to 70% damage at 700 gold. This damage is seperate from your characters normal attack damage from which your abilities are calculated, however it does proc on all attacks and abilities. Damage shown in yellow. The more upgrades you get, the lower the threshold for max damage is.

Toxic Worm — Infect enemies, dealing 50% damage/sec. Bounces to other enemies on death.

Barbed Wire — Touching enemeis deals 50% damage/sec. Further upgrades increases both the radius and damage of the wire.

Ukulele — 20% chance to fire chain lightning for 4x33% damage. Unlocked by completing the second stage.

Fireman's Boots — Walking leaves behind a fire trail that burns for 35% damage.

Heaven Cracker — Every 4 basic attacks pierce through enemies for 100% damage. Aquiring two makes it every 3 and getting 3 makes it other other hit.

Rusty K​nife — 15% chance to cause an enemy to bleed for 4x35% damage. Damage shown in red.

Gasoline  — Killing enemies burns the ground for 600% damage for 2 seconds. Unlocked by killing 20 lemurians in one playthrough.

The Hit List — Killing a randomly marked enemy permanently increases damage by 0.5. Additional stacks increase marked enemies

Ceremonial Dagger — Upon killing an enemy fire out numerous heat seeking bolts.

Plasma Chain — Chance to tether onto enemies dealing 60% damage per second. Additional stacks increase max tethers.

Headstompers — Hurt enemies by falling for up to 507% damage.

The Ol' Lopper — 100% critical chance on enemies below 9% health.

Telescopic Sight — 1% chance to instantly kill an enemy.

Tesla Coil — Shock nearby enemies for 150% damage.

Mortar Tube — 9% chance to fire a mortar for 170% damage.

Dead Man's Foot — Drop a poison mine at low health for 4x150% damage.

Thallium — Damage and slow a monster by 500 enemy damage% and 100% speed over 3 seconds. Damage in shown in purple.

Legendary Spark — xx% chance to smite enemies for xx% damage. Dropped by Ancient Wisp.

Healing/Damage reduction.
Mysterious Vial — Increase health regeneration by 1.2 per second.

Sprouting Egg — After not being hit for 7 seconds, increase health regen by 2.4 per second.

Leeching Seed — Dealing damage heals you for 2 health. Every upgrade gives you an additional 2 health.

Guardian's Heart — Gain a 60 health shield. Recharges in 7 seconds.

Infusion — Killing an enemy increases your health permanenty by 1. For every extra one of these you pick up, the heath boost is increased by .5. For example: You get Infusion and then pick up two more, your total increase would be two health points for every enemy killed. 1+.5+.5=2

Bustling Fungus — After 2 seconds, heal for 4.5% of your health every second.

Harvestor's Scythe — Gain 5% critical chancee. Critical strikes heal for 12 health.

Monster Tooth — Killing an enemy heals you for 10 health.

Bitter Root — Gain 8% max hp. Caps at 300% hp.

Tough Times — Reduce incoming damage by 14%.

Medkit — Heal for 10 health after 1.1 secnds of getting hit.

Repulsion Armor — After 6 hits reduce and reflect incoming damage by 83% for 3 seconds.

Dio's Best Friend — Taking fatal damage revives you to 40% health. Invincible for 2 seconds.

Meat Nugget — 8% chance to drop 2 meat nuggets that heals for 2x6 health.

Other
Alien Head — Decreases your cooldowns by 25%.

Life Savings — Generate $1 every 3 seconds.

Lens Maker's Glasses — Your attacks have a 10% chance to critically strike, dealing double damage.

Rusty Jetpack — Decrease gravity by 50% and increase jump height by 10%.

Beating Embryo — Use items have a 30% chance to deal double the effect.

Soldier's Syringe — Increased attack speed by 15%.

Paul's Goat Hoof — Run 20% faster. Unlocked by failing shrines 3 times in a row.

Prison Shackles — Slow enemies by 20% on every attack.

Concussion Grenade — 6% chance to stun enemies for 2 seconds.

Panic Mines — Drop a mine at low health for 500% damage.

Rapid Mitosis — Reduce the cooldown of use items by 25%. 15 second reduction for the first, 30 for the second, 45 the third, and 55 for the fourth.

Burning Witness — Every enemy killed grants firetrail, 5% movespeed, and 1 damage for 6 seconds. Dropped by Magma Worm.

Fire Shield — After taking more than 10% of your health as damage, explode for 200% damage.

Happiest Mask — Killing enemies spawn ghosts for 15 seconds with 70% health and 50% damage.

Smart Shopper — Killed enemies drop 25% more gold.

Boxing Gloves — Hitting enemies has a 15% chance to knock them back.

Old Box — Drop a jack-in-the-box at low health, fearing enemies for 2 seconds.

Wicked Ring — Critical strikes reduce cooldowns by 1 second.

Permafrost — Chance to stun enemies for 1.5 seconds and slow enemies by 60% for 3 seconds.

Spikestrip — When hit, drops spikestrips that slow enemies by 20%.

56 Leaf Clover — Elite mobs have a 4% chance to drop items. Unlocked by killing the Scavenger.

Photon Jetpack — Fly for 1.6 seconds.

Energy Cell — Increased attack speed by up to 40% at low health.

Warbanner — On level up drop a banner. Raise attack/movespeed by 30% and damage by 4. Additional stacks increase range.

Snake Eyes — Failing a shrine increases critical chance by 6%.

Arms Race — 9% chance for drones to fire missiles and mortars.

Imp Overlord's Tentacle — Summon an imp bodyguard. Revives every 60 seconds. Dropped by Imp Overlord.

Useable Items
Foreign Fruit — Heal yourself 50% of your health.

Skeleton Key — Open all chests in view.

Instant Minefield — Drop 6 mines at your feet, each dealing 400% damage.

Lost Doll — Sacrifice 25% Health to damage an enemy for 500% of your maximum health. Unlocked by killing a boss while under 20% health.

Pillaged Gold — Enemies drop gold when hit.

Disposable Missile Launcher — Fire a swarm of missiles.

Massive Leech — For 10 seconds, every hit heals you for 10 health.

Prescriptions — Increase damage by 10 and attack speed by 40% for 8 seconds.

Unstable Watch — Stop time for 7 seconds. Unlocked by completing the first stage in under 5 minutes.

Shattered Mirror — For 15 seconds, double all your abilities' damage and effects.

Shield Generator — Become invincible for 8 seconds.

Safeguard Lantern — Drop a lantern for 10 seconds. Fears and damages enemies for 20% damage.

Jar of Souls — Duplicate every enemy as a ghost to fight on your side.

The Back-up — Create 4 drones to fight for you for 10 seconds. Unlocked by having four drones at once.

Drone Repair Kit — Repair all drones.

Nematocyst Nozzle — Shoot out 6 nematocysts that deal 200% damage. Dropped by Wandering Vagrant.

Captain's Brooch — Call down a chest nearby.

Sawmerang — Throw out a sawmerang for 500% damage and bleed for 4x100%.

Snowglobe — Summon a snowstorm that freezes monsters at a 30% chance over 7 seconds.

Bouncing Brain — Throws out a brain that bounces up and down dealing 300% damage.