As someone with an interest in language, I love the pun of the title.
The game is amazing, visually, sound-wise, how it plays, it's all fantastic. It is very easy though. Even after intentionally trying to make the countdown affect me by buying upgrades till I was down to 5 blood, I didn't feel it at all. In seconds I was almost up to max.
If I have any feedback, it's turn down the amount of blood each enemy gives, especially the big guys.
Apart from that, fantastic game!