Ending the Animation

I have a start to the animation and the middle but i can't seem to find the right ending but would the game always end the same with a different player? .... each individual would surely end it differently and as this is my chosen theme (everyone is different so each game would be) i think maybe speed up the clips as it gets closer to the end until it is that fast it fades to black and the tagline would appear then Sonic 20th Birthday and finally the Sega logo. (Add to animatic). More filming commences tomorrow as i have the whole day to do it so by the end of tomorrow i will have the majority of the animation placed into my animatic and i will have a plan as to what i need to film in Wales when i leave on Monday. I am really looking forward to getting stuck into the final filming tomorrow as i can't wait to see what it looks like put together.