Here is a list of all equipment usable by survivors, Updating with tips and info as science is done!
Combat
Iron Nails II – Moderately Increases the power of melee attacks. Cost 5
Iron Nails III – greatly Increases the power of melee attacks. Cost 7
FMJ Rounds I – Slightly increases the power of firearms. Cost 3
FMJ Rounds II – Moderately increases the power of firearms. Cost 5
FMJ Rounds III – Greatly increases the power of firearms. Cost 7
Metal Solvent I – Slightly increases damage to traps. Cost 2
Metal Solvent II – Greatly increases damage to traps. Cost 3
EMP Rounds I – Slightly increases damage to cameras. Cost 2
EMP Rounds II – Greatly increases damage to cameras. Cost 3
Leather Handle I – Slightly increases the chances of landing a critical hit with melee attack. Cost 2
Leather Handle II – Greatly increases the chances of landing a critical hit with melee attack. Cost 4
Long Barrel I – Slightly increases the chances of landing a critical hit with firearms. Cost 2
Long Barrel II – Greatly increases the chances of landing a critical hit with firearms. Cost 4
High-Grade Ammo I – Moderately increases enemy knockback from firearms. Cost 2
High-Grade Ammo II – Greatly increases enemy knockback from firearms. Cost 4
Batting Glove II – Greatly increases enemy knockback from melee attack. Cost 4
Tactical Glove – Slightly increases the power of melee attack and firearms. Cost 4
Army Boots – Slightly increases movement speed. Cost 5
Survival
Mortar and Pestle II – Moderately increases the effect healing items have on your character. Cost 3
Mortar and Pestle III – Greatly increases the effect healing items have on your character. Cost 5
Bulletproof Vest I – Slightly increases maximum health. Cost 3
Bulletproof Vest II – Moderately increases maximum health. Cost 5
Bulletproof Vest III – Greatly increases maximum health. Cost 7
Gas Mask I – Slightly increases your resistance to infection. Cost 2
Gas Mask II – Moderately increases your resistance to infection. Cost 4
Gas Mask III – Greatly increases your resistance to infection. Cost 6
EMT License I – Slightly decreases how much time it takes to revive defeated teammates. Cost 2
EMT License II – Moderately decreases how much time it takes to revive defeated teammates. Cost 4
EMT License III – Greatly decreases how much time it takes to revive defeated teammates. Cost 6
AED Device – Slightly increases the speed at which you revive teammates and the effect healing items have on your character. Cost 3
Emergency Rations – Moderately increases how much health is recovered after being revived. Cost 4
Resource
Ammo Pack II – Start with a moderate amount of extra Ammo. Cost 2
Ammo Pack III – Start with a large amount of extra Ammo. Cost 4
Wallet I – Start with a small amount of Umbrella Credits. Cost 1
Wallet II – Start with a moderate amount of Umbrella Credits. Cost 3
Wallet III – Start with a large amount of Umbrella Credits. Cost 5
First Aid Spray+ – Start with a First Aid Spray in your inventory. Cost 3
Flash Grenade+ – Start with a Flash Grenade in your inventory. Cost 3
Pharmacy 101 – Slightly increases the drop rate of herbs when defeating an enemy. Cost 3
Molotov Cocktail+ – Start with a Molotov Cocktail in your inventory. Cost 2
Hand Grenade+ – Start with a Grenade in your inventory. Cost 3
Sling Bag – Increases your inventory space by one slot. (Max 12 slots.) Cost 2
Survival Pack – Start with a small amount of extra Ammo and Umbrella Credits. Cost 3
Hiking Bag – Increases your inventory space by two slots. (Max 12 slots.) Cost 5
Mastery
Shoulder pad II – Moderately increases damage dealt to doors. Cost 2
Shoulder pad III – Greatly increases damage dealt to doors. Cost 3
USB Drive I – Slightly decreases the time it takes to deactivate Security Devices. Cost 1
USB Drive II – Moderately decreases the time it takes to deactivate Security Devices. Cost 2
USB Drive III – Greatly decreases the time it takes to deactivate Security Devices. Cost 3
Auxiliary Sight – Auto aim on enemies when using firearms. Cost 1
Survival Kit – Automatically uses Green Herbs in inventory when health is critical. Cost 1
Poison Detector – Automatically uses Blue Herbs in inventory when infection reaches phase 2. Cost 1
Baton – Slightly increases damage dealt to doors and decreases the time it takes to deactivate Security Devices. Cost 3
Security Guard Uniform – Moderately increases damage dealt to doors, and automatically uses Blue Herbs when infection reaches phase 2. Cost 4
Novice Gear – Activates auto aim and will automatically use Green Herbs when low on health. Cost 3