I really enjoyed this experience! The flow of the game was fantastic, planting some seeds and watering them to get different currency was a slick idea! Super cool that you have a hoarde countdown so that I can tell when I need to get ready to battle! Also great work on the sprites and theme, the addition of a bell during the invasion really sells the medieval setting.
Some contructive feedback to help in the future:
1. I will echo what someone else said, the game will not put me back into farm mode after a certain wave and it makes it impossible to keep playing.
2. Also I found some of the melee enemies to get stuck on growing crops making them easy to kill.
3. Finally, I am unsure if the resolution scales between different monitors as my game seems to have had most of the farm off screen but luckily I could still play.
Really well done on the game in the time limit!