Here is the full list of all 15 HOGuru Presents: The House With Too Many Zombies In It achievements.
Your Journey Begins!
Complete Level 1 How You Were Supposed To
complete level 5
completed half the game
Completed level 25
kill the werewolf king
Got a 5x Combo
attacked an enemy with the crowbar
died for your first time.
finished the game! well done.
Find a new weapon!
nail it to em!
got all the weapons.
check out the credits
there is always a Easter egg