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