Here is the full list of all 19 Tokyo 42 achievements.
Complete all missions and get all collectables
Complete all ronin missions
Complete all roninja missions
Collect all the weapons
Unlock all secret portals
Collect all cat skins
Reach highest level in copdrop
Complete all ninja missions
Collect all cash drops
Find all Tokyo Tourism sights
Complete the story
Collect all coats
Complete Act 2
Complete the bike race
Kill yourself with a grenade
Get a grenade through the hoop
Complete Act 1
Kill three enemies with one grenade
Complete Intro