Here is the full list of all 93 Renfield: Bring Your Own Blood achievements.
Finish Livespring High using Cheerleader 5 times.
Finish 7 levels without picking up a powerup
Do the Kill Route using Dracula 3 times.
Retrieve Dollymop
Defeat 5 Bosses using Sister Charlotte.
Finish 4 levels without picking up a powerup
Defeat Dracula using Robert 5 times.
Finish a stage with Sun-Kissed Dracula using Sunlight 3 times.
Finish 5 stages with Mark.
Finish Dracula's Castle with 12 different characters.
Use the special attacks of at least 15 different characters at least once.
Finish Murder Room with 12 different characters.
Complete one level in Nightmare mode.
Kill a total of 1500 enemies using Special Attacks
Finish Livespring High using Cheerleader 3 times.
Defeat Dracula using Robert 3 times.
Finish 5 stages with Rebecca Quincy.
Kill a total of 300000 enemies
Finish Dracula's Castle with 8 different characters.
Defeat Bella Lobo using Teddy Lobo 5 times.
Defeat Bella Lobo using Teddy Lobo 3 times.
Finish Murder Room with 8 different characters.
Defeat Dracula using 7 different characters.
Use the special attacks of at least 10 different characters at least once.
Defeat Bella Lobo using Teddy Lobo once.
Finish 3 stages with Mark.
Finish Dracula's Castle with 4 different characters.
Defeat Dracula using 5 different characters.
Defeat 3 Bosses using Sister Charlotte.
Kill a total of 150000 enemies
Collect 1000 Moneybags
Finish Livespring High using Cheerleader once.
Collect a total of 20000 Big Bugs
Use 1000 powerups
Finish Murder Room with 4 different characters.
Collect 500 artifacts
Finish 3 stages with Rebecca Quincy.
Defeat Dracula using 3 different characters.
Finish 3 consecutive rooms without being damaged
Finish 7 consecutive rooms without being damaged
Finish 12 consecutive rooms without being damaged
Finish a level without picking up a powerup
Defeat Dracula using Robert once.
Collect a total of 10000 Big Bugs
Defeat 1 Boss using Sister Charlotte.
Use 600 powerups
Finish a stage with Mark.
Use the special attacks of at least 5 different characters at least once.
Die ten times
Collect a total of 5000 Big Bugs
Kill a total of 75000 enemies
Collect 500 Moneybags
Retrieve Escapee
Finish 12 rooms with less than 20HP
Use 300 powerups
Collect 200 artifacts
Finish 5 rooms with less than 20HP
Summon Familiars 10 times.
Deal 1,000,000 total damage using weapons
Finish 3 rooms with less than 20HP
Die five times
Deal 500,000 total damage using weapons
Collect 200 Moneybags
Kill a total of 1000 enemies using Special Attacks
Finish a stage with Rebecca Quincy.
Summon Familiars 5 times.
Collect 75 artifacts
Complete 10 challenge rooms.
Deal 200,000 total damage using weapons
Use 1 unique powerup
Use 3 unique powerups
Use 6 unique powerups
Retrieve Cheerleader
Kill a total of 500 enemies using Special Attacks
Consume 5 Egg Heads within a single run
Consume 7 Egg Heads within a single run
Consume 10 Egg Heads within a single run
Finish a Boss fight within 150s
Finish a Boss fight within 100s
Finish a Boss fight within 50s
Summon a Familiar for the first time.
Complete 3 challenge rooms.
Complete 5 challenge rooms.
Die one time
Do the Kill Route using Dracula 6 times.
Do the Kill Route using Dracula 9 times.
Finish a stage with Sun-Kissed Dracula using Sunlight 6 times.
Finish a stage with Sun-Kissed Dracula using Sunlight 10 times.
Reach Wave 70 in Endless Mode with 3 different characters.
Reach Wave 70 in Endless Mode with 6 different characters.
Reach Wave 70 in Endless Mode with 9 different characters.
Complete three levels with at least 3 different Nightmare Conditions.
Complete five levels with at least 3 different Nightmare Conditions.