I found a bug regarding the Misterious ship
I had 1 life left
Last mission stage
And a Vulcan chailgun as weapon
In a normal situation I would have died but (most likely) I destroyed the boss a frame before the laser damage was recorded.
I explain better: the animation of the attack had started, I was perfectly under (bad timing), I saw the laser…
But the bullets hit the boss exactly at that moment, so I survived (no life lost and mission complete).
I do not know if I’ve had a very big luck or found a bug but I’ll point this out