I'd criticize harshly, but...
...everyone staring at Cloud after finding out that he had sex with Tifa, that made me laugh. Did he get over Aerith and finally shag Tifa? Wow...and I thought Nanaki would make the first move. xD
But yeah, just a few things:
If this was after DC and AC, then you should have made it 3 years later, considering it was around 2 yrs later that Cloud fought Sephiroth solo. And for him to come back again so quickly, kinds doesn't make sense. =\
Oh, and there was the fact that Barrett ISN'T MR. T!!!! (I pity da fool who confuses the two...wow, quoting and rhyming.,..odd)
But yeah, Tifa should not have known Kamehameha...considering she's a fighter, not one to use magic or a weapon at all. xD
That's all I'll say, but it wasn't bad for an attempt. :)