Very smooth, well-designed game that anyone who would like Maplestory will love. The game presents a challenge that feels like a good accomplishment for overcoming. Still, you may consider an easier-difficulty mode to draw newer players more easily into the game. Which would be good, because there is great attention to detail in the elegant mechanics of this game, like the weather, the orc farting for double jump, the "level up" notice being behind all foreground elements but in front of the landscape, the intuitive screen-panning based on where your mouse is, and the highly straightforward minimap along the bottom (though slightly differentiating height would make it even more awesome).
The art, animation, sound effects, and programming are all amazing. I like the in-game music, but the rest of the game makes me expect more variety / less repetition here. Perhaps you could have the music change based on the weather, as well as the time of day if you added a dusk / night / dawn / daytime cycle like Xenoblade Chronicles. Also you should be able to mute the music and sound effects separately, in case a player wants their own music to the in-game SFX. Admittedly, some of the English is not that great (e.g. "increase reload delay 17%" or how training the boar to "Eat My Butt" heals the ogre), but to me that adds to the charm of the game (I'm still not sure why Dwarf's Axe says anything about holding mouse until full charge -- I've never held the mouse without issues). I also don't understand the significance of the number shown on the golem spell icon (I've seen it between like 2 and 277). And what causes the ogre-face sign to appear at 50 meter mark?
One mechanic I would have liked to have seen is extra damage for landing a headshot on a foe. A pretty pro late-game upgrade would be making your axes bounce once off the ground. I noticed a very small glitch, where if you land on your boar with the skill Super Stomper trained, then the next time you try to jump off, you instead do a stomp and walk off (which isn't bad it's just interesting). I'm also not certain why the Dwarf Axe is supposed to stop after hitting a frog or the most basic infantry footsoldier.
All that said, you have here a fantastic game, 10/10 great job and thanks for sharing. Love the medals too, of course. If you added social elements (options to send help out to your friends' saves, and/or compete against them by seeing their stats and accomplishments versus your own), then I have little doubt you could turn this or another project of yours into a world-class game played by hundreds of thousands.
I'd also like to see some sort of unlockable modes, like endless / survival or "new game+" or a damage test (slow-moving dummy that can't be killed that just counts total damage). The final screen should also show stats like your level, kills, damage, etc. instead of just abruptly ending the game to the generic victory screen.