From D&D 3.5 to 5.0(5E) - 15 - Stuff That Stays the Same

Instead of listing something that changed from 3.5 to 5.0, here is a list of some things that stayed the same:

• For the most part, we still roll similar die for each class for hit points.
• Rounds still last six seconds.
• Initiative is still the same.
• In combat you generally can perform one move plus one action.
• We have the same six ability scores and the same modifiers based on those scores (a score of 12 is +1, 18 is +4, etc.)
• Critical hits still cause twice the normal damage, though rogues now get to double their sneak attack damage, and your strength modifier is only applied once to the total damage.
• We still have slashing, piercing, and bludgeoning weapons.