Install Multiple APKs with AUTO-APK Installer
Installing several apps in one go can be quite a daunting task if you have to go through the installation process with each one manually. For this reason, XDA member Stickman89 has developed a very useful tool, AUTO-APK Installer, which is capable of carrying out the installations of batches of APKs without requiring any further input from the user.
AUTO-APK Installer is designed to be run on Windows PCs and uses an ADB connection to install the files to your device. You need only to copy the desired APKs to a specific folder and run the tool, and it will do the rest for you.
To learn more about the tool or to get it for yourself, visit the project thread.