CapnZapp
Legend
None of this changes the basic fact: the default 5e game is easier than most editions.The baseline game gets easier and easier as you level up - IF the PC's are given advantages (generous magic items, feats, multi-classing, better than normal stats) that are not compensated for by the DM.
There are many ways to compensate and make the game as challenging as the DM wants it to be.
Just use whatever works best for your DM'ing style - extra monsters, waves of monsters, monsters beefed up with special abilities or feats, whatever strikes your fancy. There is no one specific answer.
The default 5e game can't even handle the feats and magic items it ships with.
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