Move with ←→ or AD, jump with Space, ↑ or W. A quick tap is a small hop; you will need both. On a phone, use the three buttons.
This time the level lies about the rules: keys, buttons, coins, signs, even the pause and sound buttons up there. If a rule looks obvious, test it. Every trick gets you once; then you know.
The imp talks. Sometimes it tells the truth. Watch it closely when it speaks. Dying fills the album, not dying earns the stars, and both are worth having.
Keys: ←→ move · Space jump · R restart (counts as a death) · L levels · P pause · M sound