Almost every level has a set of emblems you can collect, which is showcased under level description in level select screen.
They look like this:
They don'tt give anything else other than this small icon next to the level, so they are not necessary for 110%
In this guide, I will tell you in what time you have to beat each level to obtain these emblems.

Welcome to Mafia Town - 1:30
Barrel Battle - 3:20
She came from outer space - 3:00
Down with the Mafia - 6:40
Golden Vault - 3:20
Heating up Mafia Town - 5:00
Cheating the race - 1:00

Blue rift: Sewers - 1:00
Blue rift: Bazaar - 1:00
Purple Rift: Mafia of cooks - 5:00

Dead Bird Studio - 3:20
Murder in the Owl Express - 5:00
Picture Perfect - 3:00
Train rush - 2:00
The big parade - 5:00
Award ceremony - 0:00 (Impossible)

Blue rift: Owl Express - 2:00
Blue rift: The moon - 2:00
Purple rift: Battle of the Birds - 6:40

Contractual obligations - 4:10
Subcon well - 5:00
Mail Delivery service - 2:00
Toilet of doom - 5:00
Queen Vanessas Manor - 6:40
Your contract has expired - 5:00

Blue rift: Pipe - 2:00
Blue rift: Village - 2:00
Purple rift: Sleepy Subcon - 5:00

The Twilight Bell - 3:00
The Lava Cake - 3:00
The Windmill - 5:00
The Birdhouse - 3:00
The Illness has spread - 7:00

Blue rift: Twilight Bell - 2:00
Blue rift: Curly Tail Trail - 2:00
Purple Rift: Alpine Skyline - 5:00

Bon voyage - 5:00
Ship Shape - 5:00
Rock the boat - 5:00

Blue rift: Balcony - 2:00
Purple Rift: Deep Sea - 5:00

Main station: intro - 0:00 (impossible due to not being able to redo the intro)
Yellow Overpass Station - 5:00
Green Clean Station - 5:00
Bluefin Tunnel - 5:00
Pink Paw Station - 5:00
Pink Paw Manhole -3:00
Yellow Overpass Manhole - 3:00
Green Clean Manhole - 3:00
Rush Hour - 5:00

Purple Rift: Rumbi Factory - 5:00

The Finale - 6:40

Blue rift: Gallery - 2:00
Blue rift: The lab - 2:00
Purple rift: Tour

If you are having trouble with some emblems, I highly recommend checking out 100% speedruns, they have a lot of useful skips or exploits.
Or check out the Boop Troop discord server, which is a community of a hat in time speedruners, where you might find something useful: https://discord.gg/DbTWwff

Thank you for reading my guide, and happy speedruning!

Check out my other guide if you want to find out more about the emblems: https://gtm.steamproxy.vip/sharedfiles/filedetails/?id=3324286269