Instalar Steam						
					
				
				
									iniciar sesión
											 | 
						idioma
						
																																					简体中文 (chino simplificado)
																													繁體中文 (chino tradicional)
																													日本語 (japonés)
																													한국어 (coreano)
																													ไทย (tailandés)
																													Български (búlgaro)
																													Čeština (checo)
																													Dansk (danés)
																													Deutsch (alemán)
																													English (inglés)
																																							Español de Hispanoamérica
																													Ελληνικά (griego)
																													Français (francés)
																													Italiano
																													Bahasa Indonesia (indonesio)
																													Magyar (húngaro)
																													Nederlands (holandés)
																													Norsk (noruego)
																													Polski (polaco)
																													Português (Portugués de Portugal)
																													Português-Brasil (portugués de Brasil)
																													Română (rumano)
																													Русский (ruso)
																													Suomi (finés)
																													Svenska (sueco)
																													Türkçe (turco)
																													Tiếng Việt (vietnamita)
																													Українська (ucraniano)
																									Comunicar un error de traducción
							
						
 
											 
													

 
						 
						

 
			 
						





For "Son of a B*tch!" achievement you actually only have to make an effort to KO Elisa and Ashmann. It's because these KOs are optional. Andrea, Porcelain, and Red Nun are practically story-related. You don't have to KO Red Nun and Porcelain in chapter 2 or 3. It doesn't have to be on one safe, you can KO Elisa/Ashmann, and reload to regain your items and KO the other. If you KO both of them in Chapter 2, you'd unlock this achievement the moment you KO the Red Nun in the start of chapter 6.
For "Moth Lady" you'd have to upgrade your Barrier skill to max to gain keys after blocking a door, then maybe Luck. The best place to farm is in the projector room in the end of Chapter 3, with Porcelain chasing you. The area is big, doors are see-through, and there are 2 of them. Keep pressing E after a successful block, you'd be able to gain hundreds of keys in a short time.