Yay , I won =p! I enjoyed your little game ^^! I didn't think of an autobattler with that theme, but that was an enjoyable experience! And honestly, for a first game, that's quite impressive =)!
I really liked the graphics, and the little animations when the monsters die are a nice touch! That trojan horse waving the white flag really got me xD.
The general game design is great, even if I would have enjoyed the enemies to scale juuuust a bit more, because it was quite easy. But I can understand that balancing a jam game is quite hard in the limited time, and it's better for the game to be too easy rather than too hard, so that was the safe choice =). The upgrade system is interesting, and I liked all the little references in the names =).
Now, the elephant in the room.... The audio. A completely silent game is a bit boring to play ^^'. I'm not even talking about music, but just some little "pewpews" when you/the enemy fires, and a victory jingle when you win the battle would have been some quick-wins that would greatly improve the game.
So yeah, overall, that's a great concept, solid execution, and I enjoyed the time I spent on it ^^. It's an awesome first game, you have potential so keep jaming =)!