Feedback: Feats (Wacky Achievements)

[Nocturnus]

I'm looking for wacky/zany/weird/odd/difficult/fun achievements to fill out a new achievement category, Feats. There were a lot of great suggestions for what I would consider Feats from the recent Achievements threads (I, II, III, IV), so here's your chance to add more. Once I get enough feedback, I'll compose a list of the ones I'm considering and we can discuss in future threads.

Here are some examples:

• Killed Rahabkor unarmed (your unarmed hit was the killing blow)
• Your kill opened a Zodias portal
• Reached Wave 30 (tbd) in the Elite Zodias Gauntlet

Looking forward to seeing what you come up with!

-ALS

Opening a portal looks ridiculous, it's basically based on luck. Apart from that confusing progress bar, you don't have any precise indicator, to know if you are close to opening the portal.
The other 2 ideas look good.