This pack has a many mods you will remember, ranging from Botania to Refined Storage to Mekanism to Thaumcraft.
But what you are not prepared for is a collection of mods based on the idea of killing your character as often and as quickly as possible. We would recommend claiming your land, don't want the creepers to start tunneling explosively for you...........
Also, animals will fight back. So yeah, attack one and don't kill in one shot, pigman mode activated ........ the army of animals will hunt you down ........
Oh, and night doesn't pass via sleep anymore. Better hope you are able to fight well. You will need to be able to if you want a chance at completing the pack.
And if you really find that it is too hard, try using keep inventory, should help.
Oh ....... forgot to add, if mobs don't find you, they will find your chests, your furnaces, your everything, and will attempt to break them, dumping the mats on the ground. Lets hope you can defend properly.
And don't hate me. I am just making sure you can survive hell.