Thank you for your comment !
We wanted to do that in the first place, but the we thought “How to know which player pressed the wrong key ? Since the two players have access to the same keys, we cannot determine who pressed the wrong one.”.
A workaround about this that we thought would be to set different keys for different players. But this would mean that as P1 if you saw that P2 has key “U” for example, P1 would just have to spam “U” to stun P2 and it would get out of hand too much xD
Thank you again for your feedback and for playing our game ! :D