*WARNING CONSTRUCTIVE CRITICISM*
Your videos are nice, but a bit of a boost in your microphone so you can be better heard will be good(as on some of your videos you can barely be heard and as well as the joystick clicks are louder than your voice which should not be the case)
A good way to get subscribers is to constantly improve your content and to advertise it on social media as well(be it facebook, reedit, twitter or forums)
As well as make engaging jokes and sketches, something unique for your channel so to say.
Make good thumbnails for your videos as well as get a good channel art and profile picture for your YouTube channel(As currently your channel art is a bit irrelevant and not saying what your channel is about, same with the profile picture)
Gameplay channels are a bit challenged as well, due to the fact that there are so many gameplay content creators out there, it can be a bit hard to get a subscriber base for such stuff.
Hope this helps.