Bugs:

Barracks don't have invulnerability while t3 towers are still up. (You can ignore towers and go straight for racks)

Bot Dire t1: you can't walk on the left side of it because of a certain tree


Suggestions:

Make towers have a bit more HP.
Add secret and/or side shop to top maybe? (I feel this is debatable)


More thoughts:

Awesome fun game mode!
Nice map; you can tell a lot of time was put into it.