Jazz Jackrabbit 2 Online

Optionally you can try to beat the levels fast.

Completed 1st and 2nd level in (start timer when pressing difficulty mode,
end timer when the screen is black after Jazz runs out of screen after
completing level 2):

For Jazz, zero-death runs:
Easy mode:
-xxMxxS(xxCS (centiseconds/hundredths of a second))
( jjturbo9's first attempt using secret shortcut tactic only available for
EZ mode: 06m04s
Video: https://youtu.be/zziZOMzOm1c )

Medium mode:
-xxMxxS(xxCS)
( jjturbo9's first attempt (standard):08m04s(00cs) 
Video: https://youtu.be/OXLB4J5IYKY )

Hard mode:
-xxMxxS(xxCS)
(jjturbo9's first attempt (standard route): 10m22s(37cs) no video but it's
true.)

Turbo mode:
-xxMxxS(xxCS)
(jjturbo9's first attempt: 2 seconds using jjnext but no cheats allowed
actually for these runs, so my serious attempt without cheats/debug
mode/save states that worked eventually is:
10m29s73cs 
video: https://youtu.be/TwF5vDmbVr4