Here is the full list of all 41 Bloody Zombies trophies - there are 24 bronze, 13 silver, 3 gold and 1 platinum.
Play an online multiplayer game
Unlock the true ending
Beat the final level without dying
Finish the game in Insane mode
Complete Level 1
Reach a hitstreak of 100
Collect a new skill
All trophies unlocked
Find the statue secret in Level 1
Find shop secret in level 2
Kill a zombie using a dinosaur
Disable the museum security under 60 seconds
Find the teachers lounge in the school
Buy something from a shop
Complete level 6
Reached the end of the game
Reach the park chest
Find the first secret keycard
Find the second secret keycard
Find the third secret keycard
Find the fourth secret keycard
Find the fifth secret keycard
Find all secret keycards
Reach a hitstreak of 500
Revive a player in multiplayer
Steal the Golden Pigeon from another player
Finish a level with a Golden Pigeon
Finish a level without being hit
Earn an S rank on any level
Finish in 1st place while playing multiplayer
Kill 4 enemies with a single attack
Upgrade a skill to max level
Unlock every skill
Get S rank on every level
Pogo 3 times without touching the ground
Avoid all signs during the Train Ride
Destroy an explosive only destructible
Discover the secret chest in Train Ride
Superdodge 30 times
Explode kill 50 zombies
Finish the game in Hard mode