There has been concerns about the actual gameplay of The Order: 1886 due to lack of in-game footage. The developer however, has finally decided to show us some new in-game footage at PlayStation Experience.
The short demo shows Gallahad going against the enemies using different weapons including some sort of assault rifle and shotgun.
It is relatively a lengthy gameplay section and should address your concerns for the time being.
To me, the gameplay looks great, and it is running smoothly. So hopefully, we will not face a lot of issues post launch.
It has also been revealed that The Order: 1886 is playable at the PSX along with a ton of other titles.
PlayStation 4 owners will be able to get their hands on the game on Feb. 20, 2015.