This was so impressive, big respect for being engineless!! The start was a little slow, which was perfect to learn the game, but a bit long for a replay heheh. The later waves were really fun tho, when the aliens got tankier! The feedback from hitting down an enemy was really nice too, but little more juice could be added by making the cows moo when they get picked up or so :b
I would've liked if the warning signs differed in size depending on how close to the view an alien is, but overall, great job!!