I don't believe, the game is really beatable in other than easy mode. If you think you can do: Provide a video - no screenshots. Like many others said: Upgrades will stuck & you'll have a really hard time - even in easy mode at levels >15. Sometimes you don't even have a chance to avoid the bullets or enemies. For example: Shooting a tower and surrounded by big-blobs and those pokemok-like things, popping out of the earth. Then you can just watch you die. Best strategy: Hide in a spot where enemies barely can hit you and take out every enemy, coming for you. And please explain, why you added a sniper-like gun. It's really nice, but you really could need it for the boss. Also the munition is really sparse. At levels >15, you really need to have more bullets for the better weapons. I upgraded them all to max, but even if you aim good, you'll be in big trouble. I really hope, this nice game gets updates. Much potential and a really well done timekiller.