Level traps, these are some of the traps that will be inplace for the level, still thinking of a puzzle aspect that the player will have to overcome to progress...

Spikes: where the player will fall to his death. Or where these will shoot at the player at some points.

Timed flames: where these will obstruct the player from progressing, till he finds a switch or a different "hidden" route to progress.Or as the name suggests the player will be forced to wait for the appropriate time to move forward.

Steamed vents: the same as the timed flames. Also these will push the player of a platform lets say, so this if timed correctly can progress successfully.

Blades{pendulums,etc}: Where these will force the player to time his progression of be sliced in half by the blades...

Moving platforms/Crushing platforms: Again a timed aspect for progression, if failed can fall to his death or get crushed once the room rotates and he gets trapped and crushed by the moving platforms.

Saw blades: These will set a deadly pace that must be either avoided or something in the level must be done to move forward or disable destroy the blades.

Cogs/Conveyor belts: Same as saw blades, these can either help or make the players life even harder to progress.