This game is hard! I played it the first time thinking that it was an arcade-type game, so I end up dying a lot, but even playing it with patience and using the covers is pretty hard, the bullets are too long and having more than 2 guys shooting at you at the same time make the game feel like a bullet hell, the inexistence of an invincible effect after getting hit was unexpected too, but that's probably what you wanted on your game.
Besides that is pretty decent, the sound effects are juicy and taking hit is pretty dramatic, It's a really intense game in general.