I thought this'd be a joke minigame where all of them are impossible (as a reflection of the CIA's real life failure to kill Castro), but turns out you can actually beat them.
I couldn't beat the explosive cigar (aka suitcase), poison pen, or sniper minigame, and I had to use an autoclicker for the milkshake and Marita minigames. The baseball one can be beaten by letting the ball roll under his feet.
Well done!
Although I did experience a bug in the suitcase minigame where it freezes to a strip of vertical lines, I unfortunately had to knock points off for that.