I've been making Celeste mods for a solid while now. You can check them out here! Below is a link to my Gamebanana page where I also post my mods.
Inhuman
Inhuman is a fast-paced red-expert map, featuring spiral boosters, zip movers, dream refills, and much more! 10 long rooms of addictive gameplay are included.
Music by Ghost Data.
The Wounded Healer
The Wounded Healer utilises fast-paced, Ultradash-heavy, expert gameplay! The mechanics included are unbreakable hearts, energy boosters, dream boosters, and red boosters. Get ready to die in that one Chultra section :3
Music by Ghost Data.
Inversion
This map is a collaboration with Sapphire_Xer0 for Music Translation Contest 2. Do you enjoy reverse boosters? No? Too bad! Inversion is all about fast-paced green GM gameplay!
Music by tn-shi.
Catfish
Catfish is a map that only uses the smallest-size rooms. Get ready for some surprisingly fun micro-gameplay! Made for (and was my best entry for) Music Translation Contest 2.
Music by DJ Ephixa.
Dead Man Walking
Another entry for Music Translation Contest 2! This red-advanced/green-expert map features feather refills and spiral boosters.
Music by Grant and Ellis.
Queen's Game
Yet another entry for Music Translation Contest 2! Features fast expert gameplay with jump cassette blocks, an underutilised mechanic imo, and dream blocks. Warning: too many spike jumps >:)
Music by Ghost Data.
Refraction
Yet ANOTHER (yes, another. I made a lot of MTC2 maps) map for Music Translation Contest 2! This map is relatively short and features simple beginner gameplay. Not exactly my best, but at least it's somewhat fun!
Music by SOTAREKO.
Drift
My final map for Music Translation Contest 2! Was a blast to make! Features Skateboard Madeline, zip movers, and dream refills (a staple of Dax maps, as you could probably tell lol). Contains intermediate/advanced gameplay with an Ultra once every blue moon.
Music by Creo.
Serendipity
A map made for the Celeste Sightreading Competition! Expert gameplay with dream refills, zip movers, double-refill boosters, and melvins. It's a bit... chilly... isn't it?
Audio must be installed separately since it's too large for Github :(
Neonspace
Fun little expert map with custom dream blocks with... exotic... behaviours.
Simulation
My very first Celeste map! Explore the simulation with caution; it seems to be experiencing some errors. !! PHOTOSENSITIVITY WARNING !!
Shades
dogshit
Rinse and Repeat
Rinse and Repeat has over 20 rooms of fun techspam/entityspam gameplay. Difficulty is advanced/expert.
Chromatic Spinner Symphony
Chromatic Spinner Symphony is a short advanced map featuring spinner breaker balls! Can you find the moon berry?
Watermelon Berries
A skinmod for Celeste, giving strawberries a Watermelon texture. mmmmmmm...
Easter Egg Berries
A skinmod for Celeste, which gives strawberries an Easter Egg texture.
Atlantic Salmon Keys
A skinmod for Celeste, which makes keys look like Atlantic Salmon.