I like the kind of elevator thing, but it's really hard to do the combo you ask the player to do.
It's really more of a cannon What I was aiming for was for you to center yourself by sitting between the blue magnets, then shoot yourself up to the small red one. What were you trying to do?
I figured out I was supposed to do so (sitting between the two blue magnets) by the 3rd try, witch felt fair, and pretty natural.
For the elevator versus canon subject, I think that's a matter of context more than speed. Maybe the fact that I was supposed to land somewhere particular. I'm not sure.
...
In fact, now I remember. I was trying to land on the red circle on the top of the cannon. I saw the other platform with the "goal" spot only the second time I played it.
I have a LOT of problems just "walking" around and jumping. I seemed to get stuck on the floor constantly, my walk speed was always random, and jumping only worked intermittently. Really need to fix that.
If you do want to have a multiple-key setup like Jasoco suggested, I'd humbly recommend TLbind, a library I built just for making things like that easy.
Earliest Love2D supporter who can't Love anymore. Let me disable pixel shaders if I don't use them, dammit! Lenovo Thinkpad X60 Tablet, built like a tank. But not fancy enough for Love2D 0.10.0+.