This was really good! I love the artstyle and the song. Awesome that you can choose from 3 characters, a little strange that their selection quotes are so inspiring considering what kind of game this is. My original plan was to play as all three and switch out when I died, but then I didn't die so I only played as the cowboy hat guy. Only things I can think to improve would be balancing, a couple visual bugs, and an AI bug I encountered. 

For balancing, I was able to put all my points into damage and do more than 200 in a single shot by day 3-5, making it so I could one shot all enemies except for octagons, which I could 2 shot. By the time I had 1000 health and a 100 round clip, nothing but the missile triangles could touch me and they couldn't do enough. The health regenerates very slow by that point too, still only +5 every few seconds, so I never made it to full health. The visual bugs are just little things, like the day counter saying day twice and the ammo counter flipping when you look left. The AI bug was with the hexagons, which would all rush to the bottom of the map and stay there. I also couldn't kill them and they'd slow the round count and the enemy spawn rate. Other than that, this game is great! Well done!

Cool art and cool game! Make sure to check out my game as well! :D

We've played for 8 waves and 7 days. In one moment we upgraded Reload Time to 0.026sec and moving + every other upgrade lost their sense (except damage), because you can just stay in one point and rotate your mouse + LMB. Maybe you want to add some limit for upgrades or increase money count for every of it? 

We absolutely love the art and music, great job!

Interesting game. Loved the music and the mechanics are nice, however, I really don t know how you implemented the 3..2..1 theme.

Was not expecting a sci fi alien/zombie war as the plot but here we are! This game's pretty good honestly, upgrades a pretty good but some has a a couple of glitches, the enemy variety is great, the music goes super hard for no reason, overall a good shooter!

had fun playing it 

I loved the visuals in this game, it felt very reminiscent of something you would find on newgrounds. Like others have mentioned the UI was very small, but I also felt the upgrade menu was very unresponsive and I wasn't really sure if my upgrades were being applied. The main menu is also VERY loud when you hover over buttons for me. Looking past the UI though, it's a very promising game, really good job on creating it's art and gameplay in such a short time!

On Safari the game is bugged, I just have a background color :/

The game is very polished good job ! Also why are you faster when you move vertically :/

The game feels very polished. The art was nice and the sound effects were great! Gameplay was fun and smooth. It was a little hard to read the UI because it was a bit small. Overall I really enjoyed this entry! Great job!

This game is so polished and fun - it feels really good to get really powerful and I enjoyed it a lot!

This was really fun to play! As others have said, the UI can be worked on more but otherwise everything else was awesome. Great work :)

Nice game! I got to wave 7. It’s really addicting. The only changes I could think of are UI based since the settings menu was way too small and also the font doesn’t fit well but all in all, Well Done!

Nice animations and particle effects, the post processing effects like the blur and then the camera shake can get a little too much and makes it hard to look at after a while. However, overall it's a very enjoyable game, it's especially amazing that you implemented a very detailed upgrade system and 3 different characters. Keep up the good work!

nice shooter, just the beep when you pass your mouse over a button is a bit irritating 

I really like this game! The art style is really cool, and I like how animated everything is! The upgrade cost should change later on, but other than that great job!

Fun endless shooter. But a little too easy later on, making each upgrade cost more money than the previous one would be a nice way to balance it out. But I like how many things to upgrade there are. The art and the effects were really nice :D

It looks very good. Upgrade system UI is not suit the game, but well done!

Very solid top-down shooter! I’m not so sure about the continuous wobbly terrain effect, but that purple skull death animation stuff is friggin cool!