Plenty of items are used in IL courses for maximum efficiency, speed, and damage output. Below are some items that you may consider adding to your shopping list before you start.
Tech: Head - Aqua Sphere Body - Blink Dash for Hylotl & Human Mission / Air Dash for everything else Legs - Multi-jump
Armor & Augments: Ferozium armor equipped in all respective slots for max potential Cooling EPP Upgrade with Mobility augment, exception for bosses as you equip the max tier rage augment before the boss begins.
Weapons: Sword Effects - Trail Dash, Blink Explosion, Rising Slash Other weapons: Thorn Grenades, Ferozium Staff, Throwing Stars, Drill Spear
Tools: Green & Blue Stim (Yellow & Orange Stims are helpful, but not necessary for completion) Grappling Hook
Aid: Nanowrap Bandages Ultimate Juice Tonauac's Blessings from The Ark (Cycle through days for different 30 minute-long buffs.)
(All items listed here are subject to change. For more help with the practical use of these items, post to the forum or ask us on discord.)