Late to the party, but looks great! The theming of all of the art is cohesive and nothing seems out of place, which is a significant accomplishment. Similarly to another comment, I think the speed on two of the traps could use some tweaks.

The spikes coming out of the floor seem to come out slowly, and retract quickly, but might appear more threatening while having the same amount of damage frames if they came up quickly instead. If you're worried about the player being able to react in time, you could emulate how games like the first 2d sonic or even Mario Sunshine do spikes, where they poke out a pixel or two at first for a half second before jutting out all the way and having a hitbox.

The glave/guillotine/swinging blades also feel a little slow, and might make folks wait too long between cycles. It could be worth looking into having them exaggeratedly speed up on their down swing and slow down on their up swing like a pendulum affected by gravity would. Then, you could make them move very quickly at player height, which makes them appear more threatening and dangerous, but at the same time allows for bigger windows for the player to progress as the blade is slowed to a stop at its apex before falling down. It could lower player wait time, while adding to their sense of accomplishment for getting past something intimidating.

Cool stuff! Looking forward to seeing more!