Awesome... but really hard

The game is everything, its so fun and I love how you can upgrade your units and all that. When I got to the stage:
Helix Outpost, it would just close out the app. Please fix that. And their are too many enemies on the map (or just really strong) somethings for the units to handle. The challenge mode is really hard too. The concept of the game though is SO COOL

AwsomeDude937 about Tiny Guardians