Revealing mistake: When Kadaj kneels in front of Rufus Shinra, watch his sword. As he kneels, it goes through the floor.
Revealing mistake: In the final battle of Cloud VS Sephiroth, when the Shinra HQ is collapsing, in the final shot of the building collapsing, one of the pieces of rubble is not there for about one or two frames, then it suddenly appears. A slip up in the CGI rendering.
Revealing mistake: During the Bahamut attack scene, in some of the wide shots above the city, you can see some of the people (All computer generated) running "through" each other.
Revealing mistake: When the giant crowd has gathered around the memorial before the Bahamut attack scene, you can see some of the CGI people are using the exact same body animations.
Revealing mistake: After Aeris resurrects Cloud, he finds himself rounded by children in the pool of water in Aerith's church, but when he stands up he is completely dry.
Answer: Actually, you don't see Tseng die. Tseng is only cut by Sephiroth - if you talk to him he says something like "I am...... still alive......". It is the little talk from Elena which confuses so many people into believing that Tseng died - it's actually a mistranslation in the US and European Versions of the PS1 game. Elna says something like: "How dare you do that to my boss!", then: "But you really got guts doin' my boss in like that!" In the PC Version of the game this is correctly translated to "You got guts messing up my boss like that."
Orion Hardy