I've fixed several important issues with Beta 6. Let me know if it works for you!

Improvements

• Improved the mission generation system to always have the same amount of enemies per mission
• Show the top storey when no agent is selected and no agent has been deployed
• Reduced the intensity of the ambiant occlusion post effect
• Updated translations

Fixes

• Fixed the memory leak causing crashes while playing on multi-storey maps
• Fixed character selection getting cancelled during the execution phase
• Fixed door kicking stunning enemies on the same side of the door as the opener
• Fixed the default "toggle wall hiding" shortcut
• Fixed the presence of character spawns linked to upper storey windows in some generated maps

Complete your mission with a single plan

• Plan every move of your team members and sync them using the new timeline system.
  
• Preview your strategy. Did you cover every angle? Are your room entries simultaneous?
  
• Proceed and watch your team execute your perfect plan. At least let's hope it IS perfect, you have No Plan B!

Missions are designed by the community using the in-game editor

• The map layout: small or big map? where do you want covers to be placed? how many entry points?
  
• The player team: do you want to play the good guys or the bad guys?
  
• The NPCs: where will they spawn? which predefined AI should they use?
  
• The mission objective: heist the bank (with or without casualties)? rescue the hostages? survive and extract from a zombie attack?

• OS: Ubuntu 16.04+
• Processor: 2.2 GHz Dual coreMemory: 2 GB RAM
• Memory: 2 GB RAM
• Graphics: NVIDIA GTX 510+. Radeon HD5900+. or Intel HD4000+
• Storage: 200 MB available space