Game controls are extremely awkward at first. Once you unlock combo to at least level 3, the game runs smoothly and gameplay becomes easy. Combo should be the first thing you purchase.
So get a bit of money and then press B to enter main menu and purchase Combo.
You might have to set the Keys at the start for Dash (F), Speed (E) and something else I do not recall. I had to do it, as for some unknown reason the keys weren’t set.
Controls:
Mouse left button: Attack
Mouse right button: Rotate view
Mouse wheel: Zoom in and out
WASD: Forward, backward, left, right
B: Main menu
G: Change clothes
H: Stunned when Elite monsters are nearby
1: skill
2: skill
8: Change hairstyle
9: Change face shape
0: Change headwear
F: Dash, dodge, run
E: Increase attack speed by 200%
Z: Hide health bar of monsters
Space: Jump
Tab: Minimap
M: World map