Some aspects of the game are hard to do. For example, I never managed to trigger the Ares Sunder bug. Here I list 15 difficult achievements for the game.
Some I left off …
Feel free to suggest others that you may have earned. If I get 15 more good ones, I’ll make another Achievements poll.
EDIT: Wow … someone used Murderous Aim.
I have used all the whales. And it was glorious.
I’ve also won with 0 hp, pretty early on in fact, the Juggs prologue is rife with this, he kills himself a lot. Recently won a match in Prodigal Sun vs Hulk where he Hulk Slapped himself in the face after 4 anger tiles, both sides 0 HP.
I like the low health ones -
1pt Club - left an opponent with 1 health
Overkill - killed an opponent with under 100 health with a level 166+ power
Careful - Had all 3 opponents with under 50 health
Back from the dead - recovered to win from less than 500 health
So Close - lost to opponents with under 100 combined health
Chicken - win when combined health of all players was 100 or under
Head-start - win while starting with les then 50% health (against similar level opponents)
Lots of variations on the same I clock up in my head when playing. I realise that you’d need to min-level some of these as it’s easier to do some when you’re starting out and only have small health, but more fun/hard when doing the low health things with higher level 3*s
Yes, I’ve done this one, while the opposing team was still mostly healthy. Once, it was with the old Spidey. Took over 20 minutes to kill a high-level healthy team with tile-match damage alone. The most tedious game I ever played.
Several times, the old Magneto pulled that off. Those were glorious games.
More recently, Captain America pulled it off for me. He’s the best at surviving 10+ rounds when nearly dead, followed closely by Patch/Daken.
I got one:
Defeat the enemy team on turn one
(did that a few weeks ago back in a LR. My first move triggered a crazy tile cascade and annihilated poor old chopstuck.)
If memory serves me correctly, I’ve done that with the desert ultimate ability, which put several crit tiles out. I went through a phase where I was trying to use all the unusable abilities just to see what the animations looked like.
Used Modern 
and 
. The only problem is getting enough 
! I swear, it’s the hardest color to get AP. But once you get
just get the 
needed to get
's Polarity Shift, create two 
tiles, then fire Murderous Aim…magic happens!
Since I primarily use Patch/LDaken for my climbing, I actually still prologue heal from time to time.
I’d love to see achievements in the game - always enjoyed them on the Xbox and enjoyed the extra challenge or way that the good ones subverted your game thinking - anyway list some more as they’ve been percolating in my mind for a while, some obviously easier than others.
Level Challenge Related:
Super 1* - Defeat level 94+ team with 1s (Non-boosted)
Super 2 - Defeat level 166+ team with 2s (Non-boosted)
Mixed bag - win with 1, 2* & 3* team members
Board Related:
Monotone - win with only matching 1 colour
Super-Cascade - get a 6+ match cascade
Blocky - create a 3x3 block of the same colour (I saw this once, very briefly, on a crazy Hulk anger tirade, could be done with MNM or GSBW too)
Lines - create a full line of the same colour (Easyish with MNM or GSBW)
Rainbow - get AP from all colours in one cascade
Powers Related:
Lazy - win without using any powers but fill up 3+
Specials - have a countdown, strike, attack & shield tile out at the same time
Not Fussy - use 9 different powers in a match
Power Cascade - use 3 different powers in a turn
During Balance of Power, mHawk + Bullseye for 14000-ish damage. It was fun.
Others:
I’ve won with both teams dead.
I never did the one-turn with Magneto, but I have won in one turn. Massive early cascades + Thor/CStorm team. Also the Thor-OBW-mStorm infinite-loop.
I’ve triggered the Sunder bug.
I’ve used a Ballistic Salvo TU without Storm around to collect the AP.
I took out a 8k+ opponent with just SpeedShot. (plus the match 3 to get him out front for the next turn)
Suggestion for ones I haven’t done:
Cover every basic tile.
Hold 210 AP (30 in all 7)
Trigger Ambush and Demolition with the same match.
By cover every basic tile you mean with like attack tiles? Because storm does that all the time. Or do you mean a team with 6 color powers, because I find it hard to believe you haven’t done that.
My method for dealing with “tough” (level 50ish) goons back in my 
days was to use 
twice in a row, covers every tile on the board, goons can’t put out CDs, goons lose.
Triggered the Sunder bug is a good one. I have both seen and used the Sunder bug.
Here are a few big damage achievements I’ve enjoyed:
Daredevil Ambush: triple trap match
Hulk Smash: >10k damage
I did that twice that I recall. Once was Lazy Cap against mostly-healthy Panther and Lazy Thor. The protect tiles and the stun really saved my butt that time. That one actually went reasonably fast once Cap got his red going.
The other time I ended up taking down a maxed Hulk with OBW, which took forever. Fortunately, I got several well-timed blue cascades, which allowed Natasha to heal as she slowly espionaged Hulk to death without ever making him angry. I don’t think I ever want to do that again.
I have one for you. For this I used Steve Rogers and MN Mags and one other. Usually Hood.
Keep All 3 opponents stunned without letting a single enemy un-stun.
Best I ever did was keep 2 enemies stun locked using MN Mags purple, (and Hood when I used him), to fuel Caps blue. Placing the blue protect tiles ensures that there will always be enough blue on the board for Hood. Trying to keep all 3 stunned all the time requires too much Ap. I’m not even sure it can be done.
So I guess “technically” keeping 3 stun locked is more of a challenge, and keeping 2 permanently stunned would be the achievement.
P.S. this is not counting Spiderman’s old pre nerf blue ability
Very cool poll Nonce, I have done only a few things like:
all the Whales (TU),
left a final opponent with 1 HP,
everybody dies but I win,
1 turn kill (in LR)
defeat a 167’s team with 2* Stormneto (to get red Sentry)
Caps done that for me in the past too - best one was he managed to finish off a high-level (150+) goon node by himself with less than 300 health. I had so many protect tiles out even the Thug pistol shots were only doing 2 damage at a time 
What do you mean, “Prologue Healing Retired”?
Presumably a reference to the fact that you used to be able to use the prologue to heal up any members of your team with spiderman, obw, etc before True Healing got brought in and means now only a limited number of characters can benefit from prologue healing.
Now that I have Patch and Daken I use prologue healing way more than before. Before, I’d just hold off on winning the match until I could pull off the victory lap Anti-Gravity Device and leave without much damage.
Here’s an achievement for the Bullseye/Colossus teams.