33 
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1Witch (On Expert Difficulty) - Left 4 Dead series suggested bymac121mr0
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2Xenomorph - Alien Isolation suggested byRazorRex
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3Giants - The Elder Scrolls V: Skyrim suggested byBlue2015
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4T-Rex - Dino Crisis suggested byRazorRex
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5Hunters - Resident Evil series suggested byBlue2015
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6Dark Trains and Armored Trains - Legend of Zelda Spirit Tracks suggested byRazorRex
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7Sniper Jackals (On Legendary Difficulty) - Halo 2 suggested byBlue2015
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8Giant Polar Bear (Level: 'Un-Bearable') - Crash Bandicoot 2: Cortex Strikes Back (1997) suggested bymac121mr0
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9Thresher Maws - Mass Effect suggested byBlue2015
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10Everything - Carnivores Dinosaur Hunter/Ice Age suggested byRazorRex
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11All Deathclaw Variants - Fallout Series(1997-2015) suggested byLuke_Procyk“The Deathclaw can kill you immediately at low levels if you are unfortunate to encounter one, and the only reason you defeat one in the beginning of Fallout 4,is that you have power armor and a Minigun ”said Luke_Procyk 4 years ago
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12Egg Saucer - Sonic Advance 2 suggested byZebetitan“The Egg Saucer's hand strike can cause instant death, even if you have rings. ”said Zebetitan 4 years ago
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13Aliens - Chrono Trigger suggested byAlHazard“Attacking these enemies with a physical attack can instantly kill you with a counterattack. These enemies can be found in the Black Omen. ”said AlHazard 4 years ago
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14Monster Ock - Spiderman PS1 suggested byRazorRex
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15Neptune - Resident Evil Outbreak & Resident Evil Remake suggested bymac121mr0
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16Sharks - Grand Theft Auto V suggested byBlue2015
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17Del Lago - Resident Evil 4 (2005) suggested bymac121mr0
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18Grunt Goblin - Halo 5: Guardians suggested byJamie Murphy“This was recently added to the game, playable in Warzone playlists. ”said Jamie Murphy 4 years ago
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19Slenderman - Slender: The Eight Pages (2012) suggested bymac121mr0
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20Freddy Fazbear - Five Nights at Freddy's (2014) suggested bymac121mr0
