There are quite a few bugs unfortunately, broken collision being one of the more common ones. The titlescreen will be completely overhauled at some point, plan is to have it change as a player progresses through each chapter and make it more representative of each part of the story.
Many people think it is pretty difficult in the beginning, a few have not, I have nerfed the enemies before, might consider doing so again. Once you get additional partymembers and more combat options it might be more clear how you can influence combat. It happens at the end of act 1. Infinite ladder bug can be triggered in the house, it's a way to "keep getting ladders". This is not something required but at least for now leads to optional secret content in the first chapter ending. There may be other secrets in there, and more coming.
Environments get increasingly varied and complex, I have grown a bit as an artist since I began, gonna rework a lot of the earlier ones, meaning those in the beginning of the game. It's a long ride if you are willing to stick with it.