This game needs lots of improvement like:
-more fluid animation of main character
-better collision detection after jump and big jump (now you must jump on last moment)
-forbid to interrupt some moves in middle of another move (forbid to interrupt jump with slash attack animation on the ground, on the other hand allow early jump in middle of sneak animation)
-you can now use big jump on everything so another moves are useless. Make all moves usable for its purpose OR remove big jump and keep one type of jump only
-add some enemies in the air so you can jump+slash them or ground enemies under obstacle (crouch+slash)
-make obstacles more visible, balance contrast between items you can interact and between background
-you can also add some special powers to collect and use
-make controls optional and redefinable or at least allow cursor arrows, many people have qwertz keyboard
-do you really want to pop up score table every time you complete short passage? Hope the answer is no and even now you must use mouse to click on submit or cancel, there is magical key ENTER
Yes and big jump=somersault in game, good luck on everything :-)