This guide is written assuming you're using Windows 10. I'm not able to check if the game will run properly on older Windows versions (if you can check it - message me and I'll update the guide).

1. Go to https://mirror.polish-abandonware.pl/Gry/, search for "Drużyna Actimel". Download the 7-zip file.
2. Extract it to directory on your desktop - password to the file is polish-abandonware.pl
3. You should see an extracted .iso file. Double-click it to open it as CD-ROM.
4. Windows should open another window with CD contents. Double-click the Instalacja.exe file to start the installation process.
5. Pass through the installation - in most cases, you can just use the default settings installator suggests.
6. After installation is completed, you should see two new icons on your desktop - the one with the helmet (starts the game in fullscreen mode), and the one with green alien (starts the game in windowed mode). Double-click the alien icon to start the game.