Since I'm too lazy to find more than one hard level for now, I highly encourage you suggest your own levels.

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= Solved
= Unsolved-----------------------------------------------------
Super Glue by Waffle
Progress: 0wnyouu
Solves: Narwhals!
Firing Squad by IGLima
Solves:
IGLima
The Vault by zhyrek
Progress: zhyrek Waffle and lord_hamybal
Solves: None
The Test by Dean-o
Progress: zhyrek
Solves: None
Take Around by BoredDude2 larger version
Solves: sparkleflower
Rolling Stones by evilclone 
Solves: sparkleflower
Turing's Test by rlbabits
Progress: skateskier
Solves: None
Ascent by rlbabits
Solves: lord_hamybal and evilclone finished by skateskier [tweaks by Waffle and uuuiiiooop]
Hoeflin's 36 by rlbabits
Progress: Waffle
Solves: None
Collecting by coderedalert
Progress: 0wnyouu
Solves: None
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Other Cool Solves
Like a Boss by zhyrek


How'd I not think of that...?