Stronghold: Definitive Edition sadly will not include a Skirmish Mode. This mode was not in the original game and retrofitting/backporting all the Skirmish related code and features from Crusader to DE is tricky. Unfortunately, it is simply not possible to accomplish within the timeframe we have to develop and release this game. We're a very small team, with the majority of our staff working on "Stronghold: Unreal" at the moment. We have a single coder working on DE (the coder who worked on the original game) so we're limited in what time and resources we have.

We're often asked 'what about adding it in a future update then?'. Honestly our focus is currently on getting SH:DE out on time with the best possible feature set, at which point we will assess our future goals, resources and projects with the team. But we do not recommend buying this game with a mindset of ‘Skirmish Mode is very likely to come in a later update’, because that is not the case.