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