I just fell for the same annoying bug twice. When you have the code and want to open the lock. You click twice and the lock diessapers and you only have a dark screen, and you will not be able to do anything. Sorry but that really destroyed the gameplay for me :/
Its a bit annoying that you are able to heal the barricade a short periode of time after its destroyed, because of that you loose mana and need to recharge it. :(
in the first cargo mission i got heavy damaged an after that i flew very fast to 30 ft. and then just fall. I don´t know if it is normal but could you tell me if ?