I TOTALLY LOVE IT!
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I'm not a great reviewer, but I will try to express all my thoughts.
Art:
Since I'm the creator of this graphic asset (Creature Pack and several parts of Overworld). In my opinion, the pack of creatures is more suitable for Roguelike \ Strategy games and this is the case for the correct use of assets.
I'm very glad how wonderful 0x72 work looks harmoniously with my monsters. (Hi, 0x72, I follow your creativity, find me on twitter :D Haha).
Music:
I never thought it was possible to create such an atmospheric soundtrack for such a small game! (I don't know how you recorded the sound effects, but I would like to meet the zombie voice actor ^^)
Gamedesing:
I really like the genre of tactical games (Most likely this is what motivated me to start creating my assets). I don't know if you used the FE mechanic.(Rock-Paper-Scissors),
5 levels are very few. Procedural generation can fix the situation and I will play this game for a long time.
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Good luck with LowrezJam!