Thanks, I'm glad you enjoyed playing the preview. It's still in a very early stage of development and I hope I'll have a chance to improve it.
Today I'm releasing a bugfix update, nothing major, just some missing textures and models that got lost during the packaging process.
Unreal Engine can be a little buggy and unstable sometimes. The development was a bit crazy, I tried to finish as much as possible in those 5 days. There are definitely things I'd like to add in the future.