All Boss Fights & Ending - Serious Sam 4 (Hard) [2K 60FPS]

This video shows all 13 boss fights in Serious Sam 4 and DLC Siberian Mayhem on hard mode, and also teaches how to defeat each boss in this game, showing tactics and patterns. The gameplay in this video was played, captured and edited by myself with NVIDIA ShadowPlay in 2K 60FPS to make my own original walkthrough. The game was released for PlayStation 5 (PS5), Xbox Series X/S and PC. Timestamps: 00:00 Megalopolyp 02:38 Swamp Hive 04:19 Saggitarian Sidewinder 07:35 Khnum 10:14 Witch-Bride of Achriman 11:12 Lord Achriman 15:12 Ugh-Zan VI, the Great Warlock (Final Boss) 19:55 Serious Sam 4 Ending 24:12 Post-Credits Scene 24:48 Draconian Burner 26:02 Enemy Horde #1 28:22 Major Bio-mechanoid 29:31 Enemy Horde #2 30:54 Cryomorph Gnaar Pair 31:33 General Brand (Final Boss) 35:34 Siberian Mayhem Ending 37:05 Post-Credits Scene Serious Sam 4 Gameplay Playlist ► For more