YMMV / Wrath of the Fallen

• Anti-Climax Boss: The last battle is an incredibly long, hard, and epic ordeal… except the last phase. That's when you face the real final boss: Grobo the Giant. No special abilities, no stage hazards, no fancy effects, just an ordinary Giant Mook and a few other enemies. What's more, if you shoot him continuously, you can prevent him from advancing and kill him before he can even touch you.
• That One Boss: Even by final boss standards, the battle with Unknown is an extreme difficulty spike, mainly due to its sheer length and the massive amount of fighting you have to do. The worst parts have got to be the Nightmare World sections, where you have to shoot multiple far away targets that require incredibly good aim while being mauled by some of the strongest monsters around (including Zombie Pigmen, Ghasts, and Withers. Yes, multiple Withers).