Too short and feels unfinished.
As I first started to play this game the graphics actually grabbed my attention and how I could tell a lot of efforts and skills went into designing the artwork and the overall design of the game but unfortunately that's where the game actually stopped impressing me.
The campaign in Trenches is comprised of six missions that are more or less identical. The only difference is the size of the battlefield and the soldiers that are available to you. The game offers up six offensive troops, and when playing the campaign you'll unlock these one after another with each mission. Being only six missions deep, you should be able to wrap up everything the main game has to offer in under 30 minutes.
In addition to campaign, Trenches offers a skirmish mode that is pretty much a cookie cutter experience of the campaign. While you'll be able to choose options like unit availability and number of trenches, nothing really helps to distinguish skirmish from the main game mode.
Once you complete the campaign you will unlock a special skirmish mode that will actually separate the experience of killing normal soldiers - the Zombie Horde mode. Rather than shooting live normal German infantry, horde mode tests your skills against the legendary zombies. It may sounds easier than normal gameplay - zombies are stupid so it's easier to kill, lack any artillery and fancy bombs, and travel in slow but ever-increasing numbers. But beware, these brainless military men are not to be underestimated. The zombies will get you and it is just a matter of how long you can survive the onslaught.
Seeing something as unique as zombie horde mode shows that the Trenches formula can be adapted for more than what you see in the main game – it's just a shame that they didn't show this kind of variety throughout the rest of the offering.
This app has so much potential but for me the game play just did not do it. The campaign is excessively short, the end of the battles leaves you disappointed as there are no rewards except for meaningless scores, more weapons are needed and even after playing for a few hours, I was not able to notice any adaptive difficulty.