noticed a glitch, when buying multiple damage upgrades at once (level 18 is capped?) you can spend superfluous upgrade points and not receive a bonus. i suggest spending damage points one at a time at about level 16.
excellent game again, are you making any money at this zeebarf? noticed a glitch at the trade center in the forest, if no items are available after using the machine the item selection is stuck until it randomly awards you a purple flower for trade, very strange.
excellent concept, good fusion of gametypes. if english is a second language for you, you've done a decent job of implementing the daunting language. otherwise, it wouldn't hurt to get a GED and just run a grammar check.
If I've said it before I've said it a thousand times - spelling counts when you're making a project. Always spell check.
That said, this is one of my very favorite games (in the vein of Abuse, an old Macintosh classic) could use more textures and environs, I like the upgrade system, and possibly add some scale (larger and smaller areas/sprites)
with a little improvement I'd give it a 4/5