Mulaka

Update: It seems that this achievement is glitched in a positive way. According to the comments, you can play normally, finish the game, quit it, then load it up again and the achievement will pop. Thanks to everyone who pointed it out.

You can attempt this on your first playthrough, if not, it probably will be easier to get on a second playthrough when you are more familiar with the game. Either way, I suggest getting the Anátzame upgrades as soon as possible, so Mulaka can take more damage.

Mulaka's health in the HUD appears as three rhombuses (or diamond-shaped figures), each one represents one of his souls, when one of these rhombuses is depleted, he loses one of his souls. You have to avoid getting to that point more than eight times. These can be replenished with a health potion, but when you use a potion you are vulnerable to enemies for brief period of time. So whe your health gets low and want to heal, try to avoid being near enemies (easier said than done in some circle fight encounters, but possible).

Most enemies are pretty easy to defeat without taking damage when you learn their behavior. That being said, in some circle fights, the Inima Seeló (white flying mantis) can be quite annoying. What I did in those instances was take care of the other enemies first while avoiding their ranged attacks and leave the flying mantises for last.

Some of the bosses can be a bit more challenging.

Teré Machiré (boss of Samalayuca): Just get behind a stone pillar and when it charges towards you and hits the pillar, it will get stunned. Hit its armored legs, repeat, and after a while it will lose its armor and you can repeat the process and hit it in its eye.

Wa'ruara Seeló (boss of Paquimé): When he's on land, hit him 2-3 times and then dodge. When he's flying, hit him with a throwing spear to force him to land. When he makes a circle of clones around you, you can use the throwing spear but it's more effective to hit him with a bomb ().

Wa'ruara Rusíwali (boss of Resó Rekubí): Throw a spear to a tentacle in ground level, and it will shoot gas upwards, then use the Woodpecker transformation (, ) to use this stream to get to the mid level ledges. Repeat the process to get to the top. Then throw a spear to each of the six mouths. The second phase is similar but there are six additional mouths, plus Rusíwali Kuta enemies flying around.

Wa'ruara Watákari (boss of Arareko): In this area you learn to make Shield potions and they are very helpful to defeat this boss. The first phase is simple enough, just avoid the boss attacks and when it starts sucking air (to throw it back at you), you have to get behind one of the green fishes and use the Bear move (hold ) in the direction of the boss. If it gets hit, it will be stunned and you can damage it by hitting its mouth. After a while, it will summon frog enemies and the bigger ones can get in the way. This is when the shield potion comes in handy. Just get far from all enemies, use a shield potion (), and you can concentrate on dealing with the boss.

Ganoko Kubechi trio (bosses of Hueráach): In this area you get the Puma transformation which includes a Puma attack, the latter I found useful for this boss fight and in general. Just run towards one of the bosses with and then when you are close press and Mulaka will transform in to a Puma and do a special attack (costs magic). Keep running to avoid the bossess attacks and hit them when they are not doing one of their attacks.

Ganoko (boss of Basacheéchi): Dodge the boss attacks, eventually it will do a move in which its hand will be encased in vines. Use the serpent transformation and then the Bear move (hold ) and after that it will drop to the ground and you have to hit it in the head with normal attacks, or a Bear move or Special attack if available. Dodging the boss attacks is pretty simple for the most part, except maybe for its rolling attack. When it attempts that attack, just run () away from it and dodge at the last second.

Ganó (boss of Bakówala): You have to hit some red crystals to free this boss. It's easy enough at first, but after a few ones it will be harder because you'll need to geton its back using the Puma transformation (, ), destroy more crystals and at some point it will move a lot. Use the Woodpecker transformation , ) to avoid getting off its back and to ground level. If you get to ground level, uou can avoid the enemies and to either side to use the Puma transformation to get on a ledge, and then use the Woodpecker transformation to get on the back of the boss again.

Teregori (final boss): The boss is only vulnerable when it shows its skeletal form. When it does that, throw a spear towards it. And then hit it with regular attacks, special attacks or a combination of both. Most of its attacks can be avoid by running, although there is one in which you need to dodge at the last moment (like Ganó's rolling attack). When it summons enemies you can deal with them or ignore them if they are not an immediate threat.

Well, I hope this was helpful. But if not, please tell me what I can improve or if I missed something.