[Free to play: Injustice 2 Mobile] - Solo Raid Kingdom of Madness H1T5 Robin King

I have probably MADE ALL POSSIBLE MISTAKES with this boss, and I hereby need to pick up lessons in order not to waste my experience. I admit that my performances were way subpar, partly because I played most of this while on metro. So I wasn't 100% focused. Boss RK is immune to stun and freeze, has a moving DOT hazard that move towards you, and boss becomes UNHITTABLE when your hero is at low health. His successful Sp2 removes ALL DEBUFFS ON HIMSELF, and removes ALL BUFFS ON YOUR ACTIVE HERO. His Sp2 effects are not written in his description, and I believe it is something that most people underestimates and thereafter suffer from it. The AI for him is slightly defensive, and I'm pretty unlucky to get hit so often by his specials. I so much wished that I have done better with so many of my pips. My 1st major mistake was to NOT to free up Raven and EPI for this fight. According to other guides and recommendations, this is one of the best builds against this boss. I used it on Boss COWB to quickly progress here, but only to be delayed with many ineffective pips here. If I ever need to suicide my hero (for Deathstroke, KOAAM), I should only let him freely hit me when he has less than 5 power bars. With more than 5 power bars, it allows him to cast his Sp2, and let him gain a lot of advantage. My BWL pip was just bad. Out of form, I allowed him to punish my heroes badly. I didn't even have the chance to finish BWL's percentage damage, and to use the percentage damage from RK. His Sp2 also whitewashed the infection debuff from BWTD. However, if played properly, I find that this is still a feasible build. Silver Banshee isn't quite ideal, as it is more difficult for her to reach critical mass for constant Sp3 with Zatanna's Puppet. BNGG can recover life when at lower health, but it is best not to go to this point of low health. I made that mistake by letting him tank supermove, and have to use BNCW to continue the remainder of the fight. I am relieved that my 2nd KOAAM pip managed to bring him down at the dying seconds. What a nightmare boss he was for me. I'm so glad it's over and done with, but I feel sorry for myself. I am generally a FREE TO PLAY player, so I don't own powerful artifacts like beta club, sword of sin & salvation. I work with whatever that is given free.