Additional to Velcrofly only is to say, that this "R11" is otherwise than the early HS2 Libido a so called "BetterRepack", including the game HS2 Libido DX and a bunch of most common mods and also the base StudioNEO - for the game at first you don´t need more.
If you´re working with StudioNEO there is a Modpack only for this, the Sideloader Modpack Studio
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You have to decide wether to download the full 170 GB or the Modpack Studio later (u can´t use this for the game).
Download links here
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, choose your game on the left side.