Rocket Windows can be broken by pressure damage, allowing escape from the SpaceFarer

It is easy to break the window tiles but... did you save-load..? On load the window tiles get their original mass back. Only exploit here is getting 100kg diamond every time you break a spacefarer window tile 

Broken and invisible

Loading save (saving when Leira was crossing the broken window)

that seems simpler than build reactor inside and let it blow up