For Honor is, at the time of writing, playing host to not one, but two special events, but on the off chance that sort of action doesn't seem overly enticing to you, you may well be interested in the game's Arcade Mode instead.
For Honor Arcade Mode is a one (or two) player mode in which they face-off against a variety of AI-controlled enemies in order to complete the given arena challenge. For Honor Arcade Mode rewards are numerous, too, but not all that well-explained.
For Honor Arcade Rewards include, but are not limited to steel, EXP, and various loot for your warriors. Every week, you can also complete the mode for a guaranteed emote drop, while each and every successive completion will only garner a chance at further exclusive emote drops. The worth of Arcade Mode lies not only in its rewards, however.
Playing Arcade Mode in For Honor is especially lucrative if you're looking for a way to quickly burn through your daily Orders and level-up your warriors. For example, should you get an Order to play a number of matches with one particular hero, take them for a run through the Arcade, as each and every encounter in the Arcade counts as a full match in this regard.
This is all well and good, of course, but keep in mind that you can only access Arcade Mode if you've purchased the Marching Fire expansion, which is now available on Steam for €29,99, which isn't exactly cheap.