UPDATE:

After extensive feedback given by the fastest fingers in the North East, we have reworked the game-play mechanics to be more balanced in terms of reaction and timing as well as eliminated potential exploit systems.

The tutorial icons also give the correct timings of multiple input enemies in addition the showing the attack range.

Those who played earlier builds and got used to that system may notice you're attacking too fast, or too slow in this build and will have to get used to the new timings.

Good luck, have fun!