First of all , great job on beating the pack , and on your LP!
To add to what Proxima said , several of the glitches and non-glitch tricks , the participants of the challenge boards had discovered , would also make it on custom levels they have made (assuming that they were active in the custom levels scene too , not all of the participants were).
So in that case you could find glitch levels , amongst other levels in their levelpacks , but in any case the number of glitch levels was moderate , because when you create a small 10 levels pack , you don't have the luxury of dedicating a large part of a pack to a single type of level.
Clam if I remember correctly , had two glitch levels in his main packs ( "Get out from the pool!" , and "Rise through the ranks" )
But most of his glitch levels could be found in his CSTame packs ( CSTame 1 + 2 ) .
The CSTame packs were two packs , Clam made in 2009 , and their purpose were , to make the Tame levels from onml much more challenging. These packs were practically "challenges:The levelpack" , because they contained 20 challenges ( 1 for each Tame level ) , tranformed into custom levels.
The players here had two options: They could load the two packs and try to complete the levels , or they could load the dos version of onml , and try to complete the challenges there.
Because the challenges needed to work the same way in onml , things like what Willlem did in his pack ( like adding additional opening hatches ) , were not allowed in these packs. You are not allowed to make a single change on the terrain , when you design these levels/challenges , because every solution needs to also work on dos onml , exactly the same way. And for that reason , the concept of backroutes doesn't exist for these levels/packs.
As a result some of these Tame-based levels ended to be some of Clam's hardest levels (probably harder comparted to the levels that exist here in Clammings).
And also some of these levels , ended as some of the most high quality glitch levels that have ever appeared in dos/Lemmix ( levels like "Now you're stuck" , "The squares fight back" and "LemmisXVIII" ) .
Also several of the levels had a very strict time limit because they were practically speedrun challenges ( with most notable example the final level , called "Speed run challenge!" , which required you to save 100% in Tame 20 in 30 seconds. you had 1 minute time limit , but you needed to beat it with 30 seconds remaining on the clock ) .