i think its really really good a good time waster, BUT have bugs a lot.
Suddenly can not move forward because the game was stuck in one of the doors everything turns black and the character does not manage to walk, many of the buttons do not work. Leaving that to one side is very entertaining the game to spend a little time shooting, the variety in map characters and enemies makes it very nice.
The idea I do not see 100% original since there are many games of this style still so the art seems very original and good quality.
Some update in the future that passes you to collect updgrades of the floor?or idk more enemys .
btw!!! amazing game!