The Last Guardian walkthrough part 6: teach Trico commands, cross

Trico begins to respond to your commands, and you'll need to pass some tricky guard problems.

The Last Guardian - Part 6: Leave This To Me Destroy Glass Eye, Climb Tower, Trico Saves The Boy

The Last Guardian walkthrough part 6: teach Trico commands, cross the broken stone bridge, rotating guards

Teach Trico to carry out commands, Walkthrough - The Last Guardian Game Guide