It's a decent game with an interesting soundtrack, but here are a few things I've noticed:
* You can lift yourself over the walls by running into a corner and shooting repeatedly.
FIX: Bullets should not be solid.
An alternate solution, since there are no ramps, there should not be any upward or downward gravity, and nothing should be able to push you up or down. That would fix multiple things.
* At the "Loser" screen, you can still spin your tires with W and S.
FIX: Disable Keyboard input on that screen.
* It seems after restarting, the music will overlap.
FIX: Be sure that when the "Retry" button is hit you trigger your "stopMusic()", "startStage()", "startMusic()" methods. (I don't know the unity syntax.)
There's a bit more, but I'll let you take care of these first as they are the main issues.
So is it impossible to play this game on Firefox? When I try, all I get is a the monkey standing in the center -not- being blown up, and clicking produces a Ninja-Kiwi bubble that takes you to the ninjakiwi site.
I got stuck on "I loved her, and she loved me." I don't know if there were some instructions I missed, but I can't use WASD or even hit Escape. I tried every other key as well, no luck.
This game would run a lot faster on slow computers if the developer removed the unnecessary particle effects (water droplets, smoke, leaves, wind, etc.) in -all- of the levels when you switched to low quality graphics. + if you think the dev should add a toggle for particle effects.
You can buy locked upgrades by purchasing the flag upgrade. It will take you automatically to the first upgrade (cannons) in the next tier of items, whether or not you've unlocked them. + this so the dev can see and fix.
For people who can't find it, the M cheese is underneath the starting room. Go to the lower right hand corner and just walk through the wall. + to keep this up!
For me, This game quickly turned from "Do nothing forever" to "Run to the edge of the map to see if there's a barrier in the water" to "Run to the edge of the map to see if there's a barrier near the nothingness" to "Fall forever/Do nothing forever."
 "Frantic 3")
 "Tank vs. Turrets")
 "Bloons TD 5")
 "i saw her standing there")
 "Super Adventure Pals")
 "Strike Force Heroes")
 "Frantic Frigates")
 "Nightmare Runner")
 "Focus")
 "Zombies in the Shadow: The Saviour - Act2 - V1.2")
 "Elephant Quest")
 "Ratmaze 2")
 "Formula Racer")
 "FPA: Sneak Peek")
 "Rocket Science")
 "Epic Quest")
Weeeeeeird, that's a new bug o_O Well, glad it got fixed!