Unmodded? I would say no. Mods are necessary as the vanilla game is lacking too much otherwise. The most enjoyment breaking thing for me in vanilla is enchanting and improving of weapons and armor. If you make uber items, then except no challenge. Then it is no longer about tactics and choosing the right tools for each job, but rather one-shotting everything. To prevent this, you have to use your own discretion. I just use perk and skill based item improvement, rather than boosting it further with potions and gear. Two other breaking things, a) how easy it is to sneak in vanilla b) instant heal potions. For difficulty I stick with Adept. But then I add increased spawns, High Level Enemies and Skyrim Immersive Creatures and OBIS. This improves difficulty not by simply boosting enemy hp, damage, stamina, but rather increasing the amount of enemies and their capabilities. As mentioned, unofficial patches are a must. I would also recommend the following: - ESSENTIAL - SKSE and SkyUI. Run the game through SKSE always. - To improve performance of the game, using the ENboost is a must. Basically it is ENB functionality in order to improve performance, whilst preserving vanilla look. Does wonders for framerate. - Dynamic Potions mod. Use this to make heal potions heal over time rather than instant. Configurable to your liking. - Stealth Skills Rebalanced - significant but not drastic change to stealth skills and combat. - Convenient Horses - Extensible Follower Framework - No Boring Sleep Wait Menu - No More Blocky Faces - Reactive Guards - Run For Your Lives - When Vampires Attack - Treebalance - Better Messagebox Controls - Superior Lore-Friendly Hair With installing most mods, I use Nexus Mod Manager (NMM). Manually downloaded files usually have instructions for how to install them, and are usually patches for NMM installed mods. Here's my process: 1. Manage/install/disable with NMM. Close NMM. 2. Auto-order with LOOT 3. Open Wrye Bash. Uncheck 'bashed patch' in list. Right click 'bashed patch', choose Rebuild Patch. Follow prompts, including unchecking mods that can be merged (it tells you which ones). Build patch, enable bashed patch. 4. Close all. 5. Run Skyrim through SKSE.