I think this is a great start to something neat! I wish the controls were a bit easier in the top down mode as I found the player hard to control and it was hard to tell how much damage I was doing to the enemies. Nice job! 

I think that he game would benefit greatly from some better feedback. If the enemies would have a stutter animation or slow for a bit and flash after being hit. I would like the gun sounds to be a bit more beefy so that I feel like I am doing something special, I like having a Dirty Hairy kind of feel when I am in an FPS. The games pacing seems a bit fast as well. A slower start to allow me a bit of exploring with turret placement would be very nice. You got a lot done for the Jam. The game works. These are just some personal observations that I think would take your game to the next level. Great Job. 

Over all a tower defense game. I liked the idea but there are some explanations left behind :) The player needs to understand that before hand not during playtime :)

Thanks for sharing

Cool concept! was trying to change sensitivity according to hotfix but couldn't find it in the start menu option, just realized it was in the pause option after quite some time. Hope you set the default sensitivity to normal at first play though.

Nevertheless, nice game!

I wish the game had better game feel and feedback. I didn't know how to place towers before I looked in the game's description. That's my fault, but I wish you could learn how to play inside the game. 

Its was  super fun but once I got the powerup gun it seemed broken once I held down the button to shoot. The shots all came from the powerup spawn point.