Stage starts out with emptiness, after a few seconds a few wall doges come out. A little bit later Tackey appears, soon supported by Squire Rel. Soon a Second Tackey appears, this time supported by Alpacky.
This level is very easy with fast attackers. Take cheap and fast cats: Lion, Manic Lion, Manic Wall, Express Cat, and Awakened Bahamut are good candidates. Spam Lions immediately as you save up for Awakened Bahamut. Then send Manic Walls and lions until the base is destroyed. Tackey will shoot over the heads of your attackers, and they should be able to destroy the base quickly.
It is possible to cheese this level. It`s difficult without high leveled cats but still possible.
Power-ups: Rich cat is recommended, but this is possible without it.
Start the battle. Spawn few C. walls and 1 C. giraffe cat to stall enemy walls. When you have enough money immediately spawn A. Bahamut. After him spawn Jamiera and C. Titan. Spam everything except combo cats and you`ll win.
First of all: You need ALL anti-alien treasures to beat this stage. If not Alpacky will kill your Awakened Bahamut in four or less hits, but you need him to survive FIVE hits or you won't be able to beat this stage.
No power-ups needed
Start the battle and immediately spawn a C. giraffe cat (do that until you have five of them on the attacking the wall doge), then start summoning crazed wall cats. Your C. giraffe cats will have killed the walls by now and you should be able to spawn A. Bahamut. If done correctly, your A. Bahamut will hit the base two times before the Alpacky spawns and attacks A. Bahamut. When that happens then good job! You are most likely going to win.
Note that in rare occasions your C. giraffe cats might get knockbacked and then are hit with the tackey projectiles, which results in them dying earlier. This can decrease the chance of winning unfortunately.