This layout was created for easy completion of the card, so you can build on this scheme. nimbus is better to use the sky tower as the nimbus in addition to causing damage to those who fly it deals and those who are on earth because of this he may not be able to kill those who fly and for this reason you can lose.So better use the sky tower as in my layout

Slime,hornets,nimbus,tree build here   https://dd2tools.com/hero/c7-solo-without-problems/

Basic layout for each lane :   3 Hornet         1 slime

For each flyer lane                                                                +1 Nimbus

Flyer 12+                                                                                +1 Nimbus

Enemy 50-100                        +1 Hornet      

Enemy 100-200                      +1 Hornet       +1 slime

Cyborgs 5-10                                                     +1 slime

Cyborgs 10+                                                       +1 slime

************************i was use few parts of that guide  https://dd2tools.com/deck/to-climb-onslaughter-with-my-team-very-easy-solo-im-on-83-at-the-moment-with-no-problems/**************************