It a cute lil game. My only issues with it are also the movement, it's pretty slidey and not super quick, and sometimes the enemies just jump you once you get in the room with no time to dodge. Aside from that I like it a lot!
Little tip with the movement, to make it more responsive - use your gun! Shoot for extra momentum. I've found that if you get your speed up, that way you keep away from the enemies a lot better