The mechanics are a bit hard to grasp (no way to know what are the effect of dice numbers), and rerolling the effect of your slash costing time is really harsh (for my skill level at least). And the dash feels nice, but the falling speed afterward is just too fast for me to handle.
But the core gameplay loop (if i got it right) : "duplicate ennemies you want to score (but don't be too greedy) and kill them all after that to score points" is pretty interesting.
For AZERTY users, use a gamepad : with a keyboard, slashing and rerolling is tied to the same key.