• Added 'Endless' game mode

Endless waves, no checkpoints, random seed for each new run and a dedicated leaderboard. And the wave size is dynamic, depending on your skill (will probably need some tweaking later).

• Distant enemies will respawn

Now you can go in any direction as much as you want. I'm not 100% sure this is appropriate for campaign mode but I think it makes the game more fun, thoughts?

That's it!