Valkyur Units are basically CHEAT Units

Valkyurs, that is what the in-game lore called these units. In this Installment of the series, you can ONLY have access to them once you beat the main story campaign and IF you have the corresponding DLC installed.

In the first VC, these units are event based, VC2 has more than 2, VC3 has ONLY ONE, unlocked through plain old story progression and in this game, ONLY 2.

Naturally, I already beat this game last year. With ZERO MODS and cheats, just with plain and simple tactics and exploits. With COUNTLESS trials and errors too.