For all this achievements the only thing you need to do is play the game normally, they are unmissable achievements, as long as you beat each of the three acts the game has you will get all this achievements.

Simplemente juga los 3 actos que tiene el juego y vas a conseguir todos estos logros.

• Things have... changed: You just have to start a run and leave the main "lobby".
  Juga xd

• Complete Act 1: The name says it all

• Complete Act 2: Same here

• Complete Act 3: And also here

• Hidden?: This one is quite straight forward as you just have to find one of the many secret rooms the levels have. Es tan facil como entrar a una de las muchas habitacion secretas que hay por nivel y listo.

• Watcha buying?: As the name implies enter the magic shops where you can buy and sell rings and other items. Tan solo entra en alguna de las tiendas de objetos para conseguir este logro.

• Watch out for the blood: Beat the first mini-boss in act 1, the Blood Worm. Vence al primer mini jefe del acto 1, el gusano de sangre.

• In the presence of madness: You will get it as you go through act 1. Te va a salir mientras avanzas por el primer acto

• Frozen to the core: Same as the previous one but when you are going through act 2. Lo mismo pero mientras avanzas por el acto 2

• Is this insanity?: Same deal as the previous but in act 3. Igualito al anterior pero en el acto 3

The brief summary of this achievements is that you need to unlock every class and upgrade there is in the room you appear whenever you start a run. There are two "currencies" you have the red orbs which are dropped by every single enemy in the game. And the Evenstars, which are dropped by the enemies that have their life bars coloured blue, this enemies are kind of like mini mini bosses.

Basicamente estos logros se basan en conseguir todas las mejoras y clases del juego. Hay dos monedas del juego que importan, los orbes rojos dropeados por todos los enemigos del juego. Y las Evenstars o coso azules que lo dejan caer los enemigos con barra de vida azul que son como los enemigos comunes pero con mas vida y daño.

• A good Investment: Just unlock one of the many upgrades that cost Evenstars. I recommend to get this ones early on, specially the ones that give you more red orbs and similar stuff. Tan simple como conseguir una mejora que cueste Evenstars

• Jack of all trades: You will get this as you play the game, in some areas of the game there are some monolith things that when you interact with them it lets you unlock one of the many classes. Mientras jugas vas a encontrarte unos monolitos raros que si interactuas te van a desbloquear una de las muchas clases, encontra el resto dispersado por los niveles y listo.

• Unlimited power!: Just unlock everything from the huge tree of upgrades. Simplemente desbloquea todo lo que esta en la habitacion al inicio de cada run.

Well this section is by far the most annoying of them all. The actual source of madness, defeat the monsters achievements.

En esta seccion estan los logros molestos de matar al malo

• Going on an adventure: Piece of cake just 10 monsters

• Novice: Easy still just 100 monsters

• Intermediate: Ok still doable 500 monsters

• Expert: The grind starts 5000 monsters

• Insane: The true source of madness, killing 10 thousand monsters. If you want to do this without having to do 100000 runs you can take advantage of the infinite spawners that are mostly in the Forest of Lies level. But you can also take advantage of the pre-boss in Act 1. Tho I recommend you take breaks if you don't want to lose your sanity.
  El verdadero grind empieza, vas a tener que aprovecharte de los spawners infinitos que hay en el nivel Bosque de las Mentiras o en el jefe del acto 1 no rompas la fuente del portal y mata a los malos cuanto quieras. Te recomiendo tomar descansos si no queres caer en una espiral eterna de locura.

• Let them burn!: Just use a ring wave of flames during a whole run and it will pop up.
  Simplemente usa cualquier anillo de fuego, recomendable el que tira una oleada de llamas

In this section you will find the remaining achievements.

El resto de los logros xd

• I am sick of you!: This one is rather simple. In the Forest of Lies you can find ponds of poison in which you can just jump in jump out, repeat the process till you have the achievement. Remember to heal from time to time.
  Facilito, en el bosque busca los cosos de agua venenosa y metete y sali y repeti hasta conseguir el logro, acorda de curarte.
  

• Big spender!: If you are grinding for the killing achievement you will have tons of money, just buy everything in the shop whenever you can and it will pop up soon enough.
  Si estas haciendo el logro de matar vas a tener plata de sobra como para comprar todo lo de la tienda cada que puedas.

• Just one more: Just keep playing runs and it will pop.
  Simplemente juga

• In a hurry there mate?: Same as the previous one, just dash whenever you can, you will use it quite often so its just playing.
  Vas a dashear bastante seguido asi que va a ser facil de conseguir.

• Get rich and die trying: Just do as the achievement says, in any run where you have more than 5k of money just let an enemy kill you and easy peasy.
  Consegui money y dejate matar por un enemigo, si o si mas de 5k