There is an exploit in waves mode: If you leave one enemy alive, the waves last for much longer. This gives you a lot more time to build defences. A way to deal with this is make the countdown for next wave start immediately after the previous wave happens.
Recent community posts
Pretty cool. One feature that I'd really like is something at the start of each mission showing where your character is. E.g. some kind of concentric ring effect. Otherwise I need to spend some seconds figuring out where I am and could already be taking damage.