I completely agree that combat is way to easy and after a while, boring.
But this game is aimed at younger children, not teens or adults. So you don't see any hard storyline, quests or even bosses, which can be solo'd being the same level as the boss.
The things that I think they could add (without making combat complicated, but adding more challange) is :
- Faster enemy attacks.
- More HP for enemies
- Reducing gun damage, which is killing everything in 1 hit, pistol or blunderbuss.
Also, these changes would only apply to high level enemies. At lower levels, weapons don't kill enemies in 1 hit. But as you get past lv 40, enemies start to get a lot weaker.
Also, not much young children would be able to get past lv 40, so it wouldn't make the game impossible to play for younger players.