First of all, this is not a platformer. Not at all. Neither a jump 'n' run.
Now, to the actual game:
- The controls are pretty responsive, there is no input lag
- The graphics: Nice pixel art!
- Multiplayer seems to work good.
- It get's boring after like 10 seconds. It's just the same thing over and over again. There is not any kind of change to the actual gameplay. And no, achievements don't fix this.