Winning Lunacia Ruin 21 over and over again

Hello friends. Today I want to talk about something people ask all the time when playing Axie Infinity: Lunacia Ruin 21.

I struggled with this level when my Axies reached level 19. I managed to arrive at the final stage. I thought I would find a big monster but nothing weird. Surprise! A badass skeleton healed by their little green partners. Man!!!!

I finally passed on the level with one Axie in "last stand" and received the glorious rewards of 200 SLP.

There's a debate concerning how much SLP can be really earned in the level and if all SLP farmed before get lost. I don't know. For me it happened they remove some SLP I earned. And got a final reward of 266/100 for that day. After that, I continued leveling up my axies and practicing in Lunacia 21. Now my axies are level 24 and they can easily pass this level with 2/3 axies alive.

But some tricks can help you to win this level. Some cards can indeed help you to win faster, as they block the enemy's healing process but I didn't have these skills in my axies, and I wasn't about to buy Axies for PvE. For me, that doesn't make any sense. If I buy better axies is for PvP not fighting against AI.

Now here I show you some tips to beat this level.

First. Notice that almost all monsters have the Speed - skill, which means that you have to "hit to kill" while you still attack first. So we don't receive almost any damage until the final stage.

Second. Reach final stage with three Axies. There's no debate. For me, it was impossible to survive the first attack with neither my beast nor bird. So, the tank should absorb all that damage

Third. Do not attack the first round. You won't have all Axies cards (unless very lucky) to cause irreversible damage.
And trust me, you need to kill the big boss in one round, or you will bleed out your axies slowly while he's healed by his partners.

Fourth. The big boss protects itself with a shield two times. In my experience, I observed patterns in the boss shielding. Sometimes it shields in the first turn. If you attack then, you're dead, you can cause a lot of damage but still, it's more than 4k.
Then the bastard shields itself again. So you should wait for the next turn and attack. Sometimes the boss doesn't set shield in the first turn. I can tell that 90% of the time won't shield itself the second round. So this is the perfect chance to attack with all your firepower.

I use a classical bird-beast-plant team, even though I'm level 24 now, I won this level with axies in Level 21. I really hope this tips can be useful.