Tactics/Strategy help. Answering your questions.

[Masyaka]

Team game, 1v1, ffa? The answers differ for that matter.

Teamgame or 1v1, not ffa.

1v1 is get a better build order, reclaim better, dont up your mexes until you have a solid map control, 4 factories are not much for a small maps. People go with 6 on average for landspam on those.

Teamgame is build a PD or two, spam a little yourself and rely on your teammates to support you or wait with a mex upgrade and spam more since 4 factories are not much either considering he have to fight not only you with those units but also other players, though its more common.

~6 mantis will defeat a PD. They have like 50, 1-2 PD is not enough. Ill be building PD if people do that until mex ugprade or they mash their spam into PD.

[biass]

Defeat a walled pd? or Defeat a non walled pd?

[speed2]

Petric will you continue with this thread if I cleanse it?

[Masyaka]

Defeat a walled pd? or Defeat a non walled pd?

1 PD dies to ~7 mantis

walled PD of 5-10 will defeat a 50 mantis sea

[Darth_Google]

Petric will you continue with this thread if I cleanse it?

Please do, man. Transfer those useless advices by master Lich and others to community advice.

[Masyaka]

The enemy is spamming tons of strats with all eco he has, and my exps fall once he sees them, even when i had tons of AA around them. The same danger goes to ACU. Cybs dont have personal shields and none sam wall ever is able to stop this amout of strats. What can i do?

[angus000]

Get in the air game and make ASFs, or spam tons of t3 MAA. If your enemy already has an absolute air dominance with a lot of ASFs, there is not really much you can do... but if your enemy is aeon or seraphim, at the very least your commander will be safe as long as you can dodge his strats, then you can try to outspam him with your land.

[Masyaka]

Get in the air game and make ASFs, or spam tons of t3 MAA. If your enemy already has an absolute air dominance with a lot of ASFs, there is not really much you can do... but if your enemy is aeon or seraphim, at the very least your commander will be safe as long as you can dodge his strats, then you can try to outspam him with your land.

I couldnt outspam ith land, he has walls of PD and torpedo defs in water so i cant use bricks. Monkeylord is an option but it will still fall to walls of T1/T2 PD or ravagers (i gave him the whole map so he can do whatever) I've made a bug.

[PhilipJFry]

@Masyaka I recommend being more specific about your questions. Try to include a replay id, name of the map or other important details otherwise its kinda hard to give good advice.
Other than that i can only recommend this:

Spoiler: show

Realise that you forgot about rule nr. 3 and ctrl+k.

[Darth_Google]

Get in the air game and make ASFs, or spam tons of t3 MAA. If your enemy already has an absolute air dominance with a lot of ASFs, there is not really much you can do... but if your enemy is aeon or seraphim, at the very least your commander will be safe as long as you can dodge his strats, then you can try to outspam him with your land.

I couldnt outspam ith land, he has walls of PD and torpedo defs in water so i cant use bricks. Monkeylord is an option but it will still fall to walls of T1/T2 PD or ravagers (i gave him the whole map so he can do whatever) I've made a bug.

Dunno, how about trying not to give your enemy whole map?