Your goal as the one-eyed boi is to pick classes and defend objectives. when you're on the pick side of the coin you need to kill people that are important to the enemy team (Medics Heavy's etc.) but as the defenseman, you need to do everything in your power to stop your enemy from completing the objective. Also apparently I need to add this you need to hit pills.

When you attack as Demo there are two key factors: Damage and mobility. First, damage: Stock grenade launcher or Iron Bomber. Stock is better for spamming and sometimes hitting directs. Iron bomber is better for just directs or planting "sticky grenades" that will kill enemies after one or two directs (depending on the class). Next, mobility: sticky jumper this is best for mobility because it does no damage to you so you can sticky jump away from enemies.

P.S. use stock melee or some variant of stock this is the most recommended for both Defense and attack

When you are defending your territory you look for one key factor: stop the enemy from completing the objective. now you may notice that there are less factors that you need to worry about but that's just on your person.when in fact on defense, you need to worry about more like what the enemy is (what class they are) and what they are using. the generaly best defense weapons for the demo are as the following: Grenade launcher or iron bomber (revert to what I said in the attack section the same rules apply to the grenade launchers there as here). Now, for the secondary slot, stock Sticky Bomb Launcher or Scottish Resistance. Stock is good for just holding one or two entry points or blowing the enemy into the air or away from the objective, or you can use it as a backup if you miss with your primary. Scottish Resistance is for if there are multiple entry points or if there is a lot of damage to be done on the objective **DISCLAIMER: DO NOT SPAM WITH THE SCOTTISH RESISTANCE IT IS STRICTLY FOR STICKY TRAPS** you may be asking "why can't I spam?" well here's an answer: it takes longer to prime meaning that it takes longer for you to explode the sticky.

Something that I should mention is Hybrid-knight. now I don't know a lot on how to play him but ill do my best. Hybrid-knight is where you use whatever primary but use the shield and the melee is your prefrence. Hybrid-knight is good for attack because you are very tanky. this is very for the attack play-stile because while your attacking you are going to be taking a lot of damage and not to mention the you can charge with the shield and make a quick escape or some burst damage. I'm not going into depth because I don't play a lot of hybrid-knight