Fix the display for 1e1M+. It's a complete waste of space to show 1.23e1M vs 1.24e1M when there is a e1000 (!!!) possible difference that's not shown. Just display e12,345,678 like Antimatter Dimensions does.
Odin's special isn't damage + heal, it's damage + *INVINCIBILITY* while active. So to beat Loki easily: get Excalibur (beat 19 with Lightknife... and Odin), and equip it.
Fight normally (strafe slowly), but when you get hit, or if you use the special, see the blue invincibility shield? Fly RIGHT IN FRONT OF Loki and fire full-blast. Once it wears off you'll get hit right again... but it's fine, you'll have racked up 200k so hello +50% special. Rinse and repeat.
Blacksmithing: at BS1, the chance to make +x is (base+0.05%*luck), where base is 8:34.18%, 9:30.52%, 10:27.53%, 11:25.08%, 12:23.07%, 13:21.42%, 14:20.08%, 15:18.97%. There is a cap at (100-3*lv)%, where lv is the one you're upgrading to. This means luck is effectively capped at 850. Also, due to the BS1 failsafe, the effective chance to upgrade is (2*x)/(1+x), where x is the nominal chance. Combining, the chance to make +15 from +7 at different lucks is 100:0.19%, 200:0.49%, 300:1.09%, 400:2.14%, 500:3.81%, 600:6.32%, 700:9.87%, 750:11.90%, 800:13.68%, 850:14.84%(max).
If you keep switching units as the enemy attacks, you can have them hitting thin air half the time... and pwn them. For example, have werewolves as main attackers and keep some cannon fodder in the front as well. Time the switch so that the enemy attacks the fodder, then the wolves come in for a bash, then retreat (and repeat). Win on day 34 for me.
Brilliand: I did the same thing. If there's a level button that looks different from the others, I will click it since it looks like the only unlocked level. At least I *beat* the final level...
Xenocutia Badge (hard – 30 points)
Earn a gold medal by scoring 100,000 points in unlimited mode in Bloody Fun Day
* 100,000 points scored (unlimited) Best so far: 99,853.
Bet you can't beat THIS precision...
 "Synergism"){kind=icon}
 "Frugal Knight"){kind=icon}
 "Cube Colossus"){kind=icon}
 "Battle without End"){kind=icon}
 "Battle for Darkness"){kind=icon}
 "StarBaron"){kind=icon}
 "Battle Formation, War of the Medieval"){kind=icon}
 "Bloody Fun Day"){kind=icon}
 "Anika's Odyssey"){kind=icon}
 "Storm the House 3"){kind=icon}