This modpack contains a LOT of stuff. I mean, a lot.
It fits perfectly for the "do-it-all" players.
It goes from exploration mods (such as "Deeper and Darker", "Desolation", "End Remastered"), "houselike" mods, weapons, mobs, bosses (including the Boss Checklist), ores, dimensions...
Also includes a particular mod that I'm enjoying to explore, "Spectrum". It expands its own information in-game as you explore, so you don't get too much spoilers from JEI (Just Enough Items, made to facilitate your GUI in-game with items information).
This modpack also has functions to improve performance (both client and server side). TT20 is server-side only, so it comes disabled by default. It comes with some shaders and resource packs installed, but the resource packs needs to be enabled manually in-game (I suppose).
Enjoy, have fun! And please leave some comment if you like to do so (: