First of all I love the mechanics of this game. The visuals are good for a game at this stage and the current mechanics work relatively well.
- The grass in the field is way too intensive on graphics cards so I'd add an option to turn off grass as many others have commented.
- There should be a couple more npcs overall.
- Add even some kind of easier to understand text tutorial and basic npc description page.
- Add more activities overall. (Mini games, maybe light puzzles, other ways to train character attributes, etc)
- Needs overall bug fixing and a lot of optimization.
Thank you for making this game and good luck with UE4.