Unsolved single-goal challenges
This is a list of single goal challenges that are incredibly difficult/impossible with current knowledge. None of these have been completed.
Clipping from the bottom area of Wiggler's cave to the top area, or vice versa Grabbing Ukiki without pressing B (useful for the BBC) Collecting WMotR Capless and/or Cannonless Transport cloning with Wiggler or a skeeter Performing a transport clone with 4 simultaneous pushers Picking up the cannon bob-omb on the same frame as leaving its radius Collecting the new impossible coin (THI) Killing the mystery goomba and collecting its coin Collecting the red coin in BitDW at the start without using the ! Switch Getting infinite coins in CCM Cloning in LLL (maybe with fall damage instant release via falling from HSF) Reproducing the TTC upwarp Moving during timestop in JRB (to get shell clones) Grab a bob-omb fake during boiling Vertical PU death in LLL HSWK between towers in TotWC Crashing the game by triggering death barrier before activating the TotWC starting textbox Putting the Ukiki that steals your hat on the monkey cage, so the Ukiki that opens the cage will murder the other one Survive in a vertical PU with a shell clone released in it Collecting the BitDW key from underneath the ground, causing you to collect the key on the death floor