Here is the full list of all 96 Chester One achievements.
Found 30 enemy Brains to unlock their Bestiary pages!
Ate 100 Cookies to refill your special attack ammo!
Killed 50 enemies with Chogata's head!
Heal yourself with Bandages 100 times!
Chogata LV MAX! Faster jump charging!
Beat TBG with The End style active the entire time on D: difficulty.
Killed 50 enemies with the Ship Special!
Unlocked all known Chesters!
Unlocked Chogata! Freaky slug Chester that can stop in midair using JUMP and relaunch himself!
Killed 50 enemies with your Homing Monocle Explosion!
Filled in 20 pages of the Other Bestiary!
Sir ChesterworthII LV MAX! Techy Monocle that Deals More Damage!
Killed 50 enemies with your Sushi Bombs! Maybe stop eating sushi.
Beat every main level on Hard difficulty!
Beat every main level on D: difficulty! Well done.
Beat all BLOCKTOPIA LEVELS without taking any damage! Normal or harder difficulty.
Beat all main levels without taking any damage! Normal or harder difficulty.
Beat all Bit Bay levels without damaging any enemies! Normal or harder.
Beat all main levels without damaging any enemies. Normal or harder difficulty.
Beat all Bit Bay levels without taking any damage! Normal or harder difficulty.
Beat all L.C.Dystopia levels without damaging any enemies! Normal or harder.
Beat all L.C.Dystopia levels without taking any damage! Normal or harder difficulty.
Beat all BLOCKTOPIA LEVELS without damaging any enemies! Normal or harder.
Beat all The End levels without taking any damage! Normal or harder difficulty.
Beat all The End levels without damaging any enemies! Normal or harder difficulty.
Mime LV MAX! Super Speed++!
Chesty lvMAX! Bullet Power++!
Unlocked the Spork Style for use on every world!
Beat all Sketchtopia levels without taking any damage! Normal or harder difficulty.
Beat all Sketchtopia levels without damaging any enemies. Normal or harder.
Chestius LV MAX! Gamebreaking++
Beat all Blueprintvania levels without taking any damage! Normal or harder difficulty.
Beat all Blueprintvania levels without damaging any enemies! Normal or harder difficulty.
You collected all of the Golden Sporks!
Unlocked RAVE MODE!
Collected all Frosting Cups! Better get the glowsticks ready.
Unlocked Chestius! Totally not a game breaker.
Unlocked Sir Chesterworth III! Use his umbrella to float to safety while you rain homing monocles on your foes!
Collected all the pieces of a mysterious ship!
Killed 50 enemies while in Super Saturation mode!
Killed 50 enemies with your Tank Cannon!
Killed 50 enemies with the Chesty Special!
Beat TBG without using any Special Attacks on Hard or D:
You've collected 20,000 stamps! Think you got them all?
Unlocked The Artist Formerly Known As Chester! Cruise around on his mimecycle tossing moons at your foes. Ignores the elemental system, the rascal.
Unlocked Chesty the Electrician! Use his bouncing fireballs to do nothing with electricity!
Chegami LV MAX! New Meal: Cheapo Ramen!
CHHST-R6 LV MAC! Hover++
Hover for quite a while in the CHST-R6!
Unlocked Chegami! His hobbies include expelling Japanese food and being kinda weird.
Unlocked COLLISION DETECTION MODE!
Unlocked the End Style for use on every world!
Beat every main level on Easy difficulty!
Beat every main level on Normal difficulty!
TTYL
Unlocked all Styles!
Unlocked CHST-R6! This doesn't seem very fair.
Killed 50 enemies with your BLOCK MINES!
Kill 50 enemies while time is slowed by Chester's Watch!
Filled up
Kill 50 enemies with your Sketch Explosion!
Mr. Chester LVMAX! ULTIMATE GEARS.
Killed 50 enemies with your Gear Shield!
You have launched 250 Special Attacks!
Your Gear Shield stopped 50 enemy bullets!
Bit Chester LVMAX! Fastest Charge and MAXIMUM Robit Buddy!
Robit Buddy killed 50 enemies!
You killed 1,000 enemies! For sure calm down.
Wait, so not the END end? This place is just called The End? What a stupid name; who names these things?
Unlocked the Blueprint Style for use on every world!
Switched your active Chester 250 times!
Unlocked the Bit Style for use on every world!
Sketchster reached level 5! BULLET POWER++
Unlocked the BLOCK Style for use on every world!
BLOCK LMAX: QUAD JUMP!
Unlocked the LCD Style for use on every world!
You have taken 750 points of damage!
You've attacked 2,500 times!
BLOCKSTER UNLOCKSTER! DESTROY WITH BLOCK MINES. BAD AT JUMPING, FOR NOW.
You Died 50 times!
Chester reached level 5! His new watch is pretty amazing and a little game breaking.
You've jumped 2,500 times!
Unlocked the Sketch Style for use on every world!
You've dealt 1,500 points of damage!
I was worried sick. Gone for 15 whole minutes, the nerve.
You switched the active Style 250 times!
You caught 750 stamps before they hit the ground, doubling their value!
Wasted a guaranteed brain drop on an enemy you had already collected a brain from. Oopsies.
Unlocked Mr. Chester! Use his Gear Shield and devastatingly slow bullets to battle on!
Beat all World 0 levels without taking any damage! Normal or harder difficulty.
You Died 15 times!
Beat all World 0 levels without damaging any enemies. Normal or harder.
You made it off of World 0 and into the wide not-world of Space!
Unlocked Bit Chester! He comes with a charge up shot, Robit buddy, and a very important space!
You Died.
Unlocked Sketchster! Use his bouncing directional attack to take care of hard to hit enemies.