Decent, but a Few Nitpicks
This game was overall a decent time killer, but had a lot of nagging issues that made me quit eventually. It has potential, but the end-game weapons come too soon and there's just so many small things that ruin it.
-The Guns: I really wish you would of done more with the elements/damage types. There was potential for requiring multiple weapons to hit weaknesses of game-ending enemies. The gun selection between choosing pistols or long guns was good, but still fell victim to the typical gun layout in each section(The starter, the sniper, the AoE, the machine gun, the laz0r/minigun). The second pistol & long gun are both game breakers and can be obtained early(the coil pistol mostly) and deal great damage to any enemy. That coupled with the easy to get auto-reload and you have a round 4 end-game weapon. It is also very easy to get the aetheric weapons. The pistol easily overshadows the long gun as well downing the tanking enemies in seconds even late game.
-The Defenses: They seemed rather useless beyond the barricades. The impaler was the most useful weapon despite it being the second cheapest. Even then it was obsolete eventually as the enemies quickly toughened up. The barricades were nicely balanced as they held the enemy back just long enough to cover a separate entrance.
The Enemies: Not much complaints here since they all seem to do what they're supposed to. Only real thing buying the Flachette Rifle or the Coil Pistol allows for early overkills netting a lot of extra beginning aether. The Swarmlords end up just being pathetic aether farms by spraying your aetheric weapon at it instantly killing(and overkilling) all the instantly respawning Swarmers.
-The Bugs: Only really saw two. The first being you can shoot out of walls if you're against them. The second being that enemies seem to be able to go through walls if their pathfinding goes just right. I've seen it with Mad Bombers(before attacking a barricade) and Chargers(..before attacking a barricade)
-The Small Nitpicks: Spamming the Storm Pistol or leaving gore on late game caused my framerate to plummet. My PC is only 3 years old and I seldom have this issue with other flash games. Bumping my scroll wheel not only switches my weapons, but also jolts my screen up or down. Not sure how many others have these two same issues since it may just be some poor setup somewhere in my PCs software I overlooked..