Extreme limits and weapons

I need the location of:
Chaos
Highwind
Final Heaven

Venus Gospel
Premium Hearth
Death Penalty

Chaos: Recruit Vincent and visit the waterfall cave with a mountain chocobo or once you get the submarine. You should see a scene with Vincent. Return later in the game, again with Vincent, and you should see a different scene. At that point you should get both Chaos and Death Penalty.

Highwind: Use the submarine to find the crashed Gelnika (airplane). It's in a chest in the cargo bay.

Final Heaven: With Tifa in the party, go to her house in Neibelhiem and play the song he remembered. X, [], Triangle, R1/L1+Triangle, R1/L1+[], X, [], Triangle, R1/L1+X, O, X, [], X. You've done it right if it sounds like the Highwind theme. Tifa should then mention something about sheet music and finds her limit.

Venus Gospel: Talk to the old man in front of the item shop several times after the rocket launch in Rocket Town. He'll eventually hand it over.

Premium Heart: Dig up the Key to Sector 5 in the bone village. Return to Midgar and Wall Market. Go to the broken automated dispensing machine. It will work long enough to dispense it.

Death Penalty: See directions for Chaos.

just additional notes to the above

Chaos and Death penalty

Vincent must be in your party of 3, and you must visit in disc 2. most people wait until disc 3 before going back in to claim your prizes, but it is possible to go back in simply after fighting about 20 battles on land.

Highwind

just in case you didnt know the Gelnika is a grey sunken airplane, not the red sunken sub.