- Cosmic Cyclone spawns 3.3 seconds in. Soon after, Metal One Horn spawns.
- 3 more Metal One Horns appear in this stage, each spawning 21.7 seconds after the last.
Lineup: Few meatshields, Psychocat, any critical hitters and any unit able to slow, knock back or freeze aliens from a distance.
Spawn a couple Psychocat to stall the Cyclone as you save up money. Once the metal one horn spawns, lure the Cyclone to about the middle of the stage, here you want to start to build your stack, start spawning all units except your meatsheilds.
As your stack starts to build, the Metal One Horn will close the gap. When he reaches the Cyclone, start meatshielding and spamming your crit hitters until they crit, then stop meatshielding and repeat.
Make sure to summon some units who can knock back aliens to regain the lost terrain if you lost any, or just make sure to deal enough damage, just do not summon meatshields or crit hitters inthis phase.
Based on the quality and quantity of your crit hitters, it may take a couple of attempts, but, as long as you own Waitress or another with guaranteed chance and you use the slow cannon to keep everyone in place during the animation, RNG will be unable to ruin your attempt.