Hey I really liked the concept for this! It's kind of a mix of a 2D slasher and tower defense. Are there any other games like this? Anyway, great work!
The game idea is inspired by a game moment from a game called Phantasy Star Online 2 by Sega, there was this emergency mission called "Mining Defense". Even the invader Valz Hunar is parody of Falz Hunar in that game.
