Unknown Island Survival

I made this game for Untitled Game Jam 16.  Theme: Survival.

The game is simple. If you want to survive, you have to destroy all enemy spawners. However, you have nothing to hit. You can only move around and jump. Therefore, you must use your enemies as your weapons.

I don't know creating models and I don't want to use prepared ones as well, so I just use simple shapes. There is also no sounds because I am exhausted and there is no time left.

Please share your ideas. I am still beginner at game development and I want to know this community better.