So, I just finished this game and.. It wasn't that good.
Firstly, the game is more-or-less built to be played with a controller. The camera-work is neat and all, but it moves around in such a way that just doesn't feel natural with keyboard/mouse. Which is weird, as it wasn't released on console (...According to Wikipedia) and it still has "save-points" and the like, which are(/were) typically signs of a console game.
I played the game over three sessions, the first two of which lasted only half an hour/quarter of an hour, simply because I got bored of the game. The button-mashing was too much and the combat wasn't that great. Only in the last session did I "truck through" and play for a whopping hour and a half, and then the game was done.
The combat is nothing to speak of, with just a handful of combos (of which 'block+jump', 'block+interact', 'block+light-attack' and 'block+heavy-attack' being the majority) and a few (quite satisfying!) finisher-moves, that boiled down to either weird QTEs (which were, at times, notoriously hard to pull off because the game'd be too quick to register your first "command" and then you'd fail the QTE) or automatic KO's.
The bosses are, at first, interesting - but their moveset is way too easy to figure out, and then they become ludicrously easy.
The graphics are subpar, with a lot of visual artifacts. Animations are, at times, pretty wonky and there are places where it's possible to see through the terrain.
The camera moves by itself, which is probably for the best w.r.t. the graphics of the game.
The "levels" were very linear, although there are secrets (health-increasing bitbobs) that can be found by "exploring" a few hidden crannies here and there. The checkpoints seemed spread out quite generously, except for the few places where a mistake in your platforming would mean death.
Speaking of the platforming, it was fairly dull and easy - with the controls being the major reason of dying.
The story is okay-ish, but I could not stand the voice-work and the constantly repeating "combat track", although the three/five-ish instrumentals were pretty decent, they certainly lacked variety.
As an aside: The achievements seem fairly buggy. They (seemingly) only "count" your latest playthrough, as I got the "complete the game with no gameovers" achievement, although I know I died at points (but maybe that's just me not dying enough to not have a "continue"? I didn't see any indication of this, though). I also got the "Kill both Vlamboor without getting hit" achievement, but didn't get "Kill Vlamboor without getting hit". Who knows?
All in all, I wouldn't recommend this game. It's dull and subpar. Sure, if you _really_ need to kill three hours, but then, there's plenty of other indie games out there that are better. The legend of Garshasp deserves better than this game.