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Guide (so far)

    General Info: 1) Fresh save, 2) Skip all (that well done) dialogue, 3) Fall off all ladders doing down with [Jump]. 4) Ignore enemies while avoiding excessive damage. 5) Avoid taking ladders where possible

     Starting level: 

Fall down like normal, all damage here is avoidable without loosing time except for the bouncers (up and down ball things) because of their RNG speed. 

Collect the hidden drumsticks by attacking the broken walls in the level, they are needed to tank the boss. 

Collect as much money as you can on your path down, we'll need 15 collected and 25 secret to fulfill the one and only purchase during the game. 

The radio must be collected to trigger the opening. 

Get the 0-Card and [Crouch] under the 2nd down arrow to spawn the secret 25 money. 

Return to the shop and purchase 4 drumsticks. 

Ascend through the first 0-Gate and jump up the blocks, then over the gap to the cracked block containing your 6th drumstick, this should be enough for this boss fight, the second one usually requires an additional secret drumstick. 

Save if you're in danger of dying, but if not, break the cracked blocks before the boss room to drop down and acquire the Vitamin. The Vitamin will full heal you and boot max health for the boss fight.

BOSS: Stand your ground, spam attack, eat drumsticks, win. (Note: you should only need four to beat him, leaving two in stock for the next boss. P.S. Don't forget to equip the glowy-stick!!!)

After equipping your stick, run to the next 0-Gate, the next room will have a secret drumstick to punch out of a wall. (You should have 3 for the boss)

Fall/Run your way to the next save room, you'll want full health for the next fight.

BOSS: Final fight in the level, sometimes falling debris can stun lock you but its the same as the last fight,  don't worry about eating all your drumsticks, there is another full health in the next room, you'll need it to tank the debris on the way up.

Hard part is over, just hop, jump and climb your way to the telepad to end the level.

I believe the times are in hexadecimal. So 15B is 347 and your time 130 is 304.

My first attempt at a 100% run (all items, secrets, etc) I got 16A (roughly 6 minutes).