system
Given the following post, respond as if you're commenting on Reddit:
human
[Kingsman The Secret Service] What was the point of the final test?

If the earlier test with the train already proves loyalty then what does an agent prove by willingly shooting their own dog? Also, if both eggsy and Roxy took the shot would they both have been given the position of Lancelot?

Another thing to mention is shouldn’t eggsy have been given a bonus point since he was the last one to deploy during the skydiving test? Proof of  strength of character should have at least merited a free card.
gpt
The test was for if the candidates were able to put their feelings aside to finish the mission. In the field, they’re gonna be forced to do things they may not personally want to do but have to do. Shooting the dog proves they’re willing to do what needs to be done. 

It’s also a test of trust. A kingsman is gonna have to put his life in the hands of people who will help him in his missions. He has to trust the people providing support otherwise he might get himself and a lot of other people killed. This is why the dogs aren’t actually killed. It’s to strengthen the idea that a the people supporting the agents really do have their best interests at heart.