From the very beginning, the graphics, music, and just general feel of the game definitely hit the arcade style spot on. Nothing really seemed out of place and the entire experience feels extremely polished and complex. I also really like the level at which it forces you to risk going for more as if you return to camp the next time you have to start out on the first stage again. There definitely is a lot of progression and replayability here and I think that's this games main strengths along with its theme.
In terms of things to improve, while there definitely is a lot of variance in what enemies can spawn, as well as the player upgrading over time, the gameplay loop could benefit from a bit more complexity. Maybe giving the player more options to fight or the enemies new unique traits could help elevate the strategy in this game and make it feel a bit more skill based.
All in all,
Great extremely polished game and it definitely hit the arcade feel right on the spot!
-Henry_Hamster