Question

What did King Richard I of England achieve in the Crusades?

He recaptured the city of Jerusalem.

He brought the Crusades to an end.

He made a truce concerning Jerusalem.

He allied the Catholics and the Orthodox.

Answer 1

I'd say that he made a truce concerning Jerusalem -- specifically, one that allowed Christian pilgrims to freely travel to the city which was still held by Saladin's forces.

The Crusades definitely didn't end there (there was one more "big" Crusade, the Fourth, and a few smaller ones after that), he failed to recapture Jerusalem despite his victories in the field, and he didn't really unify Catholics and Orthodox faiths.