I think the basic gameplay loop concept here is enjoyable. Wandering around and collecting things while avoiding danger, then having the opportunity to purchase things with what I've collected is a fun and simple idea perfectly suited for a nokia game.
But I feel there was so much that was unexplained here. What to the barrels(?) do? What is the flame symbol for? How am I supposed to know when a round ends? What do end-level stats like "escaped" mean? You mention being able to purchase a throwing knife (which I was excited to use), but never saw it as an option in the store. What would make it available?
I did about 2 nights and I still wasn't sure the answer to any of these questions. And since the the third night seemed the same, not knowing if any of them would be answered discouraged me from continuing.
I can tell you have some fun ideas here (I really wanted to try the throwing knife!), and I think if things were a bit more clear, you could really improve on this really solid foundation you have. I had a fun 2 nights, good job!