The fact that the strategems shake with every swap and do not swap to the next one instantly really throws off the experience.
Highly suggest a instant-swap rather than the current "shake once, glide off screen, bounce once" - at higher speeds, the player spends more time waiting for the animation than actually pressing buttons. With this change, it'll also be better make any wrong input restart the arrow sequence rather then outright move on to the next strategem.
I also suggest allowing for customising of the timer length.
Some form of a scoring system will be excellent, even if it's just "perfect clears" and "total cleared".
If these are done, this will absolutely be outright better than the in-game Strategem Hero by sheer merit of having most of the strategems available, and having a pause-button equivalent.
Excellent work!
