PP #21 - For most of the movie, the "turtles" fight with standard weapons given to them by Splinter. Before the climactic final battle, they will rediscover their crashed alien ship. On the ship, they will use their technology create "techno" versions of their existing weapons as it will be the only way to defeat Shredder.
PP #22 - Splinter isn't a rat.
PP # 23 - Some kid holding his mother's hand will see the "turtles" attempt to enter the sewers unseen. Michelangelo will go "Shhhhhh" and slowly sink into a manhole.
- TMNT:BS Team