This guide is for the latest stable release, 3.0.9d. The guide will be updated later for 4.0.0.
Step by step guide to sieging:
Step 1: Make sure you have enough minions and feed in order to siege the base. This comes from personal experience and different builds. Choose your titan build here. I will recommend the life essence or the super regen armored spines build.
Essential items for sieging: Titanic wards, and Floating eye (if they have truesight, make sure you have more than one floating eye). Everything else is bonus luxury. These two items allow you to indefinitely stay at a base sieging, and makes sure you have the vision needed to attack walls covered by fog (commonly overlooked factor), and prevent re-walling without having to spend mana on pearling.
Step 2: Pearl the base to scout out everything. Take special note of bounce-able workers, workers next to trees to nuke, and bounce-able hunters, who is the re-waller, if they have lumber pooling, etc.
Step 3: Camp a minion at the shop so they don't lumber feed if you have enough minions. Put it in fog, so when a turtle comes out to buy stuff and you think it has 5-6 items already on it, nuke it with a level 2 nuke to earn yourself your treasure.
Step 4: Make sure that the collective amount of units are able to one hit a builder with enough nukes. You will not be able to break a base if you don't have enough nuking power.
Step 5: Make sure you are sieging as soon as possible. You don't want bases up for long, or they will lumber feed, and you will lose at GP. When you get enough minions and get your titanic wards and floating eye, siege as soon as possible.
Step 6: Don't waste your heals and mana early on, unless you have life essence. Normally time is not a factor, so it's okay if you spend a bit of time healing up with titanic wards, and making sure you prevent re-walling by nuking re-wallers down.
Step 7: Practise your chain sync nuke. You should be able to chain a nuke off a hunter easily with tab nuking.
[Q][Click target][tab][Q][Click target]
That is a double nuke. Repeat if necessary. If you are able to do this fast enough, you will be able to triple nuke a 50/50 hp unit and be able to let it bounce onto another builder.
Step 8: Make sure you have followed a good skill build. A suggested skill build is:
For minions with bounce nuke and bounce heal only (Suggested Syph or Molt for beginners)
Main titan:
1) Level one scout ability (don't get eye of the ocean on syph though, that's not the scout ability. Put two levels into water minions instead)
2) Nuke lvl 1
3) WW
4) Save skill points. If you need to upgrade your nuke, then do so. If you are about to siege, put the rest of the points into heal.
Minions:
1) Nuke lvl 1
2) WW
3) Save points (if you are about to siege, put two in nuke and have no heal)
4) Heal lvl 2 (if you siege at level 4 minion, then leave nuke at level 1 and put two in heal)
The reason why I like to save my points is so I can have the option to either go nuke minion or heal minion. You never know if you need that extra point in nuke to catch that scumbag Demo trying to nether away. You will get used to skilling a skill in the last second and before sieging with experience.
Step 9: Use the floating eye in fog. There is a few seconds of transition WW time for the floating eye so watch out for that as well. Make sure to put the floating eye out of range of ranged heroes or builders if they have true sight.
Step 10: Control groups. Suggested control groups:
[1] Main titan (or F1, but sometimes it bugs and you have to use [1] for main titan if titan is not [F1])
[2] Pearler
[3] All minions
[4] All units, including water minions
[5] Teleport cage
[6] Mini-minions
[7] Chimaera scout, water minions or floating eye
Step 11: When sieging, put your unit that you want to tank in the front. This is normally just a minion.
Step 12: Put a titanic ward down.
Step 13: Select all units, then right click the first wall.
Step 14: Select a unit and right click it back if it gets lower than half HP. This is essential because you don't want to waste WW to back up, so you have to account for tower damage taking a lot of your HP.
Step 15: If they focus your main titan, use your heal to get to full HP, then back off.
Step 16: You want to keep your main titan HP at full HP the whole time, so that when a re-waller comes out, you can just charge your main titan forward to stop him from re-walling, and making sure your minions are following you so that you can nuke him down.
Step 17: Repeat above steps, taking away a wall at a time. Don't get greedy, taking two walls at a time speeds things up, but if you are an underfed titan, you will lose too much HP and allow builders to re-wall.
Step 18: When the base has less than 3 layers of walls, check your mana and WW cooldowns. (if you did everything perfectly, all units should have WW)
Step 19: Send the units with WW CD to the back.
Step 20: Make sure every unit is at full HP, then put down a titanic ward inside the base, near the towers.
This is the end of the first twenty steps. There are two ways to go from here. It depends on whether or not the base has truesight or not.
No truesight minion rush:
Step 21: The first way is to just use your main titan, attack as much as possible, continuously heal as much as possible (this should be the first time you use your minion heals so that you conserve mana for the big minion rush), then WW when you are 1/3 HP.
Step 22: When you are full HP, all your skills and heals should be all on cooldown, as well as the minions.
Step 23: Put down a titanic ward down so that it reaches a lot of the remaining walls and towers.
Step 24: Rush in your minions first
Step 25: Break WW on your main titan when your minions have reached your location so that you will have 3 units hitting the wall you want to kill.
Step 26: Since you rushed your minions in first before you broke your main's WW, you must WW your dying minion.
Step 27: De-select your minion from your [4] control group by shift clicking the unit
Step 28: Press [control] + [4] so that your [4] control group is re-made without the low minion, so when you right click units or nuke things, it doesn't break WW, and he stays in WW to regenerate beside the titanic ward.
Step 29: Repeat steps 26 to 28 above to keep all your minions alive, and destroy buildings in a bee-line towards the builders if the towers are doing too much damage. If it is not, then you can feed off everything in your sight.
Step 30: Secure builder deaths. If the builders don't have teleport, use one minion per builder to secure their deaths. Normally there will be a wall jump out, so send a minion behind the base so when it jumps out, you will be able to assassinate him.
Step 31: If you think you can't feed off all the towers and have to back soon, then you can charge towards the builders and chain nuke them all to death.
Minion rush when builders have truesight
Following the first steps 1 to 20 above, the enemy base should have around 3 layers of walls.
Step 21: Select control group [4]
Step 22: Group up so all units are close together.
Step 23: Put a minion in front of your group
Step 24: Put your main titan so it is second in your group since it should deal more damage
Step 24.5: Make sure there are two fresh wards down, both touching each other. One will be near the towers, and the second will be where your minions retreat to since there is truesight.
Step 25: Use WW when minions are half health. If you find that you made a mistake and a minion doesn't have WW, then spam heals, then teleport it away. This is another reason why you save your heals, as a precaution for mis-micro.
Step 26: When WW'd, if they use truesight, you have to back the single minion. All the way to the safe ward away from tower DPS.
Step 27: When the minion is safe, de-select the low minion from your [4] control group by selecting the [4] control group first, then shift clicking the unit with the low health.
Step 28: Re-group the control group without the low HP minion by pressing [control] + [4] so that your [4] control group is re-made without the low HP minion, so that when you right click units or nuke things, it doesn't break WW, and he stays out of range of towers to regenerate beside the titanic ward.
Step 29: Make sure that there is a titanic ward covering every unit and where you're about to go. This is an easy thing to forget, but is essential for your success.
Step 30: When a minion or the main titan is low, make sure you use your chain heals to re-boost the HP back up to 100%. When main titan is too low and there are no heals left, use WW to get away to safety, or use the cage's teleport.
Step 31: Repeat Steps 24.5 to 30 until all the remaining wall layers are penetrated.
Step 32: Secure builder deaths. If the builders don't have teleport, use one minion per builder to secure their deaths. Normally there will be a wall jump out, so send a minion behind the base so when it jumps out, you will be able to assassinate him.
Step 33: If you think you can't feed off all the towers and have to back soon, then you can charge towards the builders and chain nuke them all to death.
General tips:
Spoiler!
-Burn