With E.X. Troopers set to release late next month, 4gamer has released some new gameplay trailers. Contary to the earlier videos, these ones are purely based off the gameplay, so you can get an idea of what to expect.
Both videos showcase the missions featured in the demo, but also demonstrate the different type of weapons / skills. If you would like to try it out for yourself, you can currently find the demo on the Japanese PSN store, which also included online co op.