1) Springboards that launch the player a different height should be different colors (like what Sonic the Hedgehog does), and said height difference shouldn't be introduced to players next to a spike ceiling that'll kill them as a direct result of said difference like in level 4. 2) Hazards and moving platforms should be synchronized so the player isn't forced to wait too long, unlike the end of level 9 where the two guns are neither synced to each other nor the platform, thus making it unclear when it'd ...

Thanks