Have You Seen Him

General reccomentations: 

Play with headphones; not only is it more immersive, but you will be able to stay alert as well as identify just what exactly is heading your way.

Unless you like a challenge, keep inventory is reccomended. The modpack is quite brutal in terms of how much damage you will be taking. There are also some really beefy mobs and not many good ways to counteract them early game. 

Day Experience:

Mostly normal, with the exception of some smaller hostile mobs. Sometimes they can become a real nuisance if not dealt with quickly. Just try to keep moving.

Cave Experience:

Quite difficult; there are a lot of aggressive mobs that will spawn. Make sure to light up your caves thoroughly, and ALWAYS keep a bed nearby. Prioritize having a bed near wherever you're playing instead of where your main spawn is. If you decide to play hardcore, best of luck to you.

Night Experience:

Best stay inside unless absolutely neccessary. This is when everything in the caves take to the surface; if sleeping isn't an option, you should either have a good plan or great armor. Good luck.