I agree with the others that the control scheme didn't feel very intuitive, and it wasn't very clear to me which character had which bonus effect.
Also, for me, WASD controls didn't work so I used arrow keys instead.
Personally, I didn't find it super fun, but I can acknowledge the good work put into this to make an end-to-end game. The levels are clearly designed specifically for the new mechanics and that makes it quite clear how the player might utilise a new mechanic 👍