Onslaught of the crowd

A mixture of first-person shooter and strategy game in the tower defense genre.
The goal of the game is to prevent any enemy from getting to you. To do this, you will shoot at the crowds trying to destroy you. As you progress through the level, the difficulty will increase, your opponents will become more numerous and bring with them a strange surprise that is difficult to kill - giants. It will be a real incentive to see to what extent the game can test you with new opponents.
Luckily, and as you'd expect, your arsenal of weapons can be upgraded level by level, adding more firepower and different weapons such as better machine guns or cannons.