It appears that the devs are targeting a period no earlier than about 1520, considering the introduction of wheellock firearms. From some of the designs given and the general tone of things, however, I'd think it'd be closer to about 1550 - though still in the earlier half of the 16th century.
So, I'd expect a similar level of technology. Firearms and gunpowder artillery are one of the breakout military innovations of the era, despite being used for 200-300 years at this point. Through the last century, the matchlock has established its usefulness outside of the limited siege context that firearms were associated with before, thanks to the decreasing number of peasant levies on the battlefield and the increasing amount of steel armor worn making armor penetration an important consideration. Now the wheellock has arrived, prompting an explosion of experimentation in new designs and tactics that have recently stabilized in new innovations like the pistol, rifling, a new generation of multi-barreled firearms, and the caracole/fire by rank. Bows and crossbows are still used, but most commentators accept that their replacement with firearms is inevitable at some point in the future. Light artillery has become integrated into the battlefield with an emphasis on mobility, resulting in artillery having a place in field battles for the first time in history. And the pike is the heart of the battlefield, the aggressive and disciplined pike formations sweeping away enemy opposition.
Cavalry has also been empowered by recent technological changes. The pistol gives both light and heavy cavalry a compact, easy-to-use, and devastating anti-infantry weapon that either replaces or complements the lance. Plate armor is reaching its peak, even as the full plate suit is abandoned in favour of half plate in order to achieve greater speed and mobility while still maintaining effective armor.
Navally, firearms have also changed battles. Most cannons are still breechloaders, though as powder becomes more and more powerful muzzle loaders are increasingly being adopted to prevent escape of gases from the breech. Boarding, while still a valid tactic, occurs less often as the first truly ranged naval engagements are enabled by the range and power of cannon when compared to archers. The new carrack design has revolutionized shipbuilding, but many military ships are still galleys due to the coastal location of battles and the advantage gained from not being reliant on the wind for propulsion during battle.