Tactix is using two fonts, called Clash Display and Figtree. It can be downloaded at Google Fonts and Fontshare. It is free for personal and commercial use.
Illustrations used in Tactix come from an open source illustration library - Manypixels. Meaning they are are free for personal and commercial use.
All icons used in Tactix come from an open source icon library - Microsoft Fluent system iconography. Meaning they are are free for personal and commercial use.
All images used in Tactix come from Freepik, and are free for personal and commercial use.