You can watch the full installation guide here:
English version: https://www.youtube.com/watch?v=LHapy4pKwCU
Portuguese version: https://www.youtube.com/watch?v=gHU7m8ysu-k
Installation process:
First of all: Make sure that you have the latest version of ScripthookVDotNet installed and working. Script will not work without this plugin. Armor is useless without the script. You also need ScripthookV and ASI loader installed. Check the required windows packages and how to install here
Second: Install the script files, extract all files to gta5.exe folder. Test the Script, in game press Ctrl+N to see if mod menu appears, if message about activation appears, perform the activation here.
Third: Install armor:
1 - Extract files somewhere
2 - Using OpenIV, add the .YDR files from folder "armor parts" to your cutsobjects.rpf file that is
inside modsx64g.rpflevelsgta5generic, case you don't have the mods folder check this
video to see how to setup it, you can install in original x64g.rpf but i don't recommend this, use mods folder instead.
3 - Copy the armor files to your Scripts folder, copy the folder that is inside folder "to scripts folder"
to your gta Scripts folder
4 - Always use latest version of script.
Issues and solutions
Problem: Nothing happens when you press Ctrl+N
Solution: Make sure you installed the script, also make sure that ScripthookVDotNet is working
Problem: Script asks for activation
Solution: Activate the script using this blog post
Problem: Script stop working when you choose a armor
Possible solution: Update your ScripthookV and ScripthookVDotNet
Problem: Armor don't appear, some weird objects appear instead
Solution: Avoid game updates or use the mods folder idea
Problem: Armor parts are distant from player char. (wrong offset)
Solution: Use the .ini armor file that goes with the armor, if problem persists replace the commas with dots in the numeric values of the armor .ini file, example: from 0,25 to 0.25
Download
First of all. make sure you have the required windows packages for ScripthookVDotNet: http://gtaxscripting.blogspot.com.br/2015/06/gta-v-net-scripts-setup.html
Download the script: Support link :) - Mirrors (Make sure to use the ScripthookVDotNet files that goes with the zip)
Armors
Armor - Mark III armor by JulioNIB: Main link - Mirror
Armor - Mark III armor by Rarefacer: Main link - Mirror (Blue version: here)
Armor - Mini Hulkbuster armor: Main link - Mirror 1
Armor - War Machine armor: Main link - Mirror 1 (Don't forget to update your script)
Armor - Hammer Drone armor: Main link - Mirror 1 (Don't forget to update your script v1.5 or later)
Armors setup guide:
-Make sure you have asi loader and OpenIV.asi plugin installed, otherwise you can't load custom game files, you can install it using OpenIV, go to menu Tools > ASI Manager...
-Extract all files to a folder
-Copy content of folder "to scripts folder" to your GTA V scripts folder
-If you don't have a folder called "mods" in your gta5.exe folder, create one.
-Case you don't have a copy of x64g.rpf inside mods folder, make one copy.
-Using OpenIV navigate to modsx64g.rpflevelsgta5genericcutsobjects.rpf
-Click in Edit mode to enable edit mode
-Click in Edit and then click in Add
-Select the files from folder "armor parts" and click in Open
Hotkeys
-Press Ctrl + N to show mods menu, use pg up/down or numpad 8, 2 to navigate, press Enter or numpad 5 to activate selected item
-Special vision modes - I
-Super melee attacks - Q - XBox control: B
-Ground attack - Flight + Q
-Lift/grab entities: Hold Q while in ground
-Weapon mode - E - XBox control DPad right/left
-Shoot with weapons or throw things - Left mouse button - XBox control Right bumper
-Hold space to toggle flight mode
-Flight control - WASD, Shift, Control and mouse. Press W more times and hold to increase flight speed
Tip:
Hold attack button when shooting to avoid that player char. keep "punching the air"
Obs.: Some features are specially set for some armors like Hulkbuster, you can change settings in armor .ini file