I found two possible strategies : on Froggerer, try to get bounced by the NPC vehicles without getting ripped apart link using Blackjack's Bus Serpentine from the Workshop link

I got the achievement while doing following: I tried all default tracks/levels; I tried all vehicles; I tried all characters; I tried all poses for 1 character (you don't have to try all poses for all characters and maybe the poses aren't important at all) So, you didn't try all levels...and maybe not all poses for 1 character?