Thanks! Glad you like our game and the art style! :) We did not draw inspiration from Nuclear Throne, but I do see similarities! However, that game is far more interesting. Much more variation and interesting gameplay :P
Well, they worked on that game for many, many years. I highly recommend Jan Willem Nijman's (from Vlambeer) talk on "The Art of Screen Shake" -- seems you have some of that down but it is still a great video to learn from. =)