Each day is split into a number of parts. If you end each part day with 100% wall, you get the bonus. If after any part day you have less than 100% wall you don't get the bonus. PRIOR to the end of each part day your repair guys rebuild your wall. The game checks the status of your wall AFTER the repair guys have done their thing. Thus: you can take damage up to and including the value your repair guys can fix, you still get the bonus. No repairs take place on the final part of the day.
btw: got all the HC badges on my first attempt. With a Sheriff in the party! The secret of my technique was to make sub-optimal choices. Instead, I invested heavily in sheer dumb luck. There's a life-lesson in here somewhere. I'll ask my girlfriend, she's smart and beautiful. OMG, EPIPHANY! I'M A LUCKY IDIOT.
Dear Mr fmfbrestel. Mmm, now, how can I put this nicely? How about: Sheriffs or impact mods are not optimum choices for HC mode? HC is about making optimum choices.
To make optimum choices use intelligence and/or wisdom. Use them and you will tend toward the avoidance of frustration.
Incidently, you can also use those to work out "which way is up?" (Hint: the flat-earthers know)
They can also be used to resolve the eternal arse/elbow (aka **** from shinola) conundrum.
Hope this helps. + if it does ...
MathematicalPi. Yup, I getcha. Getting in close is a way of killing phoebes with anex. Not to contradict you but coming in close depnds on what's left in the deck. Otherwise, you're trading the 70% for a 50/50 switchout. Leaving us with anex in short with low energy. RamboBatman makes a good point with Phoebe/sharpstone. But I aint going near conditional probability! Twinge? Where are you man? I'd come close in those circumstances. If your forcing your oppo to switch, you've got the edge. Again, Anex is ahead.
Man, Rambo, you made me do maths. I hate that. Seat of the pants every time hitherto. Turns out the absolute worst-case scenario (long) for Anex/Valk isn't as bad as I assumed. Higgy can't kill without a crit. Phoebe? She's got a 30% chance of not being dead.
Nope, un-valked Anex against Insig Hig runs the risk of being toasted without a hit. Thus the Valk. It's the odds you see. Worse case scenario (with valk) is a dead in the water, clutching on to life hig and a dead Anex. The other possibility (50/50)is a dead Anex and two of your characters with huge chunks missing. You were wondering what that Radiance Burst was good for ....
 "War of Omens"){kind=icon}
 "Spellstone"){kind=icon}
 "Kingdom Rush Frontiers"){kind=icon}
 "Card Hunter"){kind=icon}
 "Tyrant Unleashed"){kind=icon}
 "Desert Blitz"){kind=icon}
 "Elona Shooter"){kind=icon}
 "Robot Wants Ice Cream"){kind=icon}
 "Crunchball 3000"){kind=icon}
 "Kongai"){kind=icon}