The assassin pack is what you get as a starter package, and by the name of it, it's obvious that it includes many items such as money and skills so using this pack to its maximum potential will ensure easier gameplay at start etc., but keep in mind that these packs can only be used once per player since they are one-time use items which means don't waste them on low level NPCs or quests and try to save them for harder quests and more rewarding tasks instead!