Wanted to suggest to add just a couple more options to the !diff selection for more variety;
[4x Rank] 25% HP
several people have already beaten 50% HP with over half their HP, so this is for them.
[4x Rank] RED full crits
Full crits do 3x damage and greatly increase knockback, and would make certain classes far more dangerous, such as Heavy, Scout, and Sticky Demoman, so I think 4x would be an appropriate modifier.
[4x Rank] 25% HP
several people have already beaten 50% HP with over half their HP, so this is for them.
[4x Rank] RED full crits
Full crits do 3x damage and greatly increase knockback, and would make certain classes far more dangerous, such as Heavy, Scout, and Sticky Demoman, so I think 4x would be an appropriate modifier.