Here is the full list of all 25 Full Mojo Rampage achievements.
Unlock the champion mask
Get the best score in a PVP match
Complete all the quests in "Annoying" difficulty
Find all the items from the library
Complete all the quests in "Hardcore" difficulty
Reach max level
Kill Mandingo without being damaged
Pick up 10000 coins
Complete Quest 4
Complete Quest 3
Unlock all the gods
Complete survival mode in masochistic difficulty
Complete survival mode
Complete a quest in cooperative mode
Complete Quest 2
Complete Quest 1
Kill Wormling without being damaged
Talk to 3 different gods in a single match
Pick up 1000 coins
Play in cooperative mode
Kill an enemy when you are heavily wounded (1% of life or less)
Get 10 frags in a PVP row without being killed
Complete all the quests in "Definitely not easy" difficulty
Complete all the quests in "WTH is this?" difficulty
Complete all the quests in "This is VOODOOOO!" difficulty