this is an alternate upgrading system i made for ATD a few months ago, where you can upgrade individual turret stats. i honestly prefer it to the current one where you upgrade towers by levels (plus it's much less of a pain in the butt to edit). give it a try. (btw this is an old version of the game)
the system is designed to be EASY TO USE, so feel free to click see inside and read instructions for adding your own upgrades.
