Board Thread:Questions and Answers/@comment-118.211.8.204-20150302141811/@comment-6697950-20150502080610

Correction, Heathcliff did not allow Asuna to recover from paralysis. He was just as surprised as everyone else that she managed to do that.

And for god knows how many times, Kirito did NOT "come back to life". That's only how the anime ridiculously and confusingly portrays it. He only killed Heathcliff before the system deleted his avatar.