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