Landing the cactoid compact indeed took many perfect "rounds" but I got the cactoid commendation on one of the only 3 perfect rounds I managed to pull off. I know you have a 10% chance of landing each, and I’m grateful that I got lucky in the 4th round.
The final round seemed almost like a "gimme." Sure the code for the Nebra Riverking is 8 buttons long, but the timing seemed very forgiving. Plus, the code came up every time on every round. I only got the other codes during the round in which I finally landed the king, after I had done so.
I’m not complaining, as after the 4th round I was grateful for the reprieve 😀
E.g., Nebra River King code: R1, L2, Up, Square, R2, L1, X, Right