How to make an original action? Just have a look at LD24 X0ut where you meet hundreds maybe thousands cube enemies.
You are cube as well with one fast shooting gun but that’s not everything. When travelling in the cube world you can collect “minions” to help in shooting and destroying the enemies who are mostly blocking entities. They come in hordes and you have to work hard to get further. Some blocks and cubes are very strong and the end of the mission is destroying the final core, is it really the end?