As the title says,
1) Random encounters
2) Night and day cycle
3) Camping where you are, dungeon, woods etc.
4) No height advantage in combat
5) No enemy HP bloat
[...]
Let's re-iterate differently. I mentioned the ruleset, but maybe it's something else. What do you mean exactly by "feel like D&D"? What's your reference, another D&D game, a tabletop game you've played (and that will depend a lot on the DM's style...), the ruleset as described in the Player's Handbook?
Because this question is very subjective if you don't set the reference, and you'll get a different answer from everyone.
