Finishing the game?

I have defeated deucalion.
And now i must beat tiamat.
But i cant go past lvl 6 of the futuristic tower.
Heres my party (Listed in No Strategy Line Up)

Magmawyrm
Barricadus
Angelon
Shadowlance
Astroleon(Egg)
Leviathan
Pyroviper
Vulcaraptor
Glazio
Megalorex(Egg)
Raptorex
Georex
Voltiger
Searex
Twigster(Egg)
Halopard
Skywolf
Tidalwhale
Archeonis
Gigaceros
Mechadino
Inferneo
Pengboss(Egg)
Duskroc
Bouldon
Blazerunner
Mammut
Scorpiode(wasnt lucky in om)
Blazewing

I caught all of these except the ones marked with Egg.
Should i just grind? Or should i catch some rares?

Level up more arks.

Have healers.

Catch more rares…

Get don penguini( tap tombstone in Orlen, and type “dragon island”) and put him in the back of ur line up. Also make more fusions, and try to get omegawyrm

Thank you

oh forgot to mention get stun skinners… that could really help especially if he gets a lot of BA’s.

Can You Guys Give Me Tips On How To Defeat Deucalion??

Level up your guys

Get high star Arks

Especially the fusions