Ink Resistance Up is an ability in Splatoon and Splatoon 2. It mitigates the negative effects of touching the opponent's ink on the ground. Negative effects alleviated by Ink Resistance Up include reduced jump height, reduced movement speed, and accumulation of damage. The ability stays active throughout the entire match, and is used any time the player steps on enemy ink.
Quicker movement in enemy ink is especially helpful for the Inkbrush and Octobrush, to move quickly even when turning sharply. Weapons that let the player strafe fast like the Sloshing Machine and Mini Splatling also benefit from Ink Resistance Up, as small patches of enemy ink will not slow down movement as much.
Ink Resistance Up improves the mobility of Inklings stepping or swimming in enemy ink. It also reduces the damage taken from stepping in or swimming through enemy ink. Normally, touching enemy ink will accumulate up to 50 damage at a rate of 30 damage per second. But with Ink Resistance Up, only 30 damage can accumulate, and at a rate of 12 damage per second.
Ink Resistance Up cannot be rolled as a sub ability.
Tactics
Players appear on the mini-map if they accumulate 30.1 damage or more. Because only 30 passive ink damage can accumulate with Ink Resistance Up, the player will not show up to enemies on the mini-map after stepping on or swimming through enemy ink. [1]
Mutual Exclusivity
This ability is found as the main ability only on shoes, so other abilities found only on shoes are mutually exclusive with it; in other words players cannot have them together. These abilities are Bomb Sniffer and Stealth Jump.
Ink Resistance Up prevents players from taking damage from opponent's ink for a certain duration (39 frames at maximum) after touching it.
Ink Resistance Up reduces the maximum damage that accumulates from stepping in enemy ink, from 40 damage to as low as 20 damage. The rate of damage accumulation is also reduced so that the damage cap will always be reached in about 2.2 seconds after the user starts receiving damage.[2]
Ink Resistance Up increases the movement speed of an Inkling in the opponent's Ink while walking, but not while swimming. (The mobility benefits also apply while attacking with a weapon, while rolling with a roller, and while charging a splatling or charger.)
— Fixed an issue where, under the following conditions, players would only receive the benefit of Ink Resistance Up when stacking it to maximum effect.
Moving while shooting a weapon in the Shooter category.
Moving while shooting a weapon in the Dualies category.
Moving while preparing to throw a bomb or special weapon.