Below are listed more advanced tactics to winning battles. A player should understand most of the Battle basics before reading these.
Power = Win[edit]
Half of your problems can be solved with leveling up. The other half of your problems can be solved by properly abusing the Item World, Specialists, Reincarnation, Master-Pupil Relationships, and basically doing anything to get your stats as high as possible as fast as possible. A Lv9999 Adell with 300 Felonies, perfect equipment, and an army of pupils can smash anything it wants to tiny little pieces. ANYTHING.
The only other problems you might run into can be solved with patience and luck. Question: How many times must I drill through the Item World before that last Pirate finally shows up? Answer: Patience and luck.
Supporting Cast[edit]
All right, so the afore-mentioned Lv9999 Adell kicks ass. With proper support, a Lv3000 Adell can kick just as much if not more ass.
No party is complete without a healing unit, a Cleric's or Beastmaster's stat-boosting abilities, and a Thief's status-infliction. A Cleric's healing and stat-boosting spells can be reincarnated and pupil-taught so many characters you have can learn some level of them (although obviously not everyone can use healing spells as well as a Cleric); Not only will doing this make it so you can always spare someone to waste their turn healing the injured, but when it seems all a character can do for a turn is move, you can use Braveheart or Shield to boost their stats for the next turn.
Don't neglect innate abilities either: positioning a Beastmaster next to a monster can boost all the monster's stats by a huge 20%, but positioning three Beastmasters next to a monster can increase its power to 160%! (And that's not even using a Beastmaster's stat-boosting spells!)
Status Ailments[edit]
Sleep and Poison are beyond valuable. You can toss all foes onto each other until there's only one left with a brutally high level, then put him to Sleep, then Poison him. Each turn of poison brings down his HP by a whopping 20%, so in three or four turns you can finish even the toughest character off by using all your characters in one massive combo. However, remember that most bosses are immune to this tactic, especially Post-Game and Secret Bosses, usually having a Geo Panel arrangement or innate abilities to counter this tactic. These types of enemies can be solved through powerleveling.
Throwing Tactics[edit]
Whenever you're throwing a character, always throw them before they move. This way the character can move after they're thrown, and get into new spots more easily. You can throw a character on top of a lift-tower, if the current topmost can lift, no matter how high the tower may be.
If you throw multiple foes (except Prinnies) on top of each other, their levels will combine.
You can use Heavy Knights or other defensive units to lift delicate mages out of the brawl for a while. If you're fighting a single super-powered character, who can kill any of your units in one or two hits, you can sacrifice a weakened lifter to save a more important ally from being killed off.
Base Panel: Why it's Awesome[edit]
Whenever an ally enters your base panel, two things happen:
- They disappear from the map, allowing you to bring out someone else in their stead. This is amazingly useful in the Item World, as you can send out a weakened character, then bring them back when most of the enemies are incapacitated so you can take your timing healing them.
- If they haven't attacked, you can bring them out again, with their move command completely refreshed. This can be used to extend movement range up to double normal amounts.
Even if a character has attacked and moved, you can still throw them into the base panel to get them out of harm's way. This is invaluable for mages or other characters who can bring down hell upon your foes, but can't be bothered to survive a single hit. However useful it could have been, you can't throw towers into the base panel.
Enemies can't stand on or walk through your base panel, but your characters can. You can use the panel to retreat behind after attacking, then your foe won't be able to approach you. This of course only works on foes with low enough MV, and without range attacks. You can use other tactics around the panel, but as enemies become stronger and more likely to have high-ranged specials, this aspect of it becomes less useful.
Weights[edit]
Weights seem pretty useless. Just one drags your character down to 25% HP for a tiny stat bonus (two bring it down to 6.25%, and with three your character might as well be dead). The trick to them is, they bring your character just into "Critical" range, which activates most characters' innate abilities.
While a Ninja doesn't have much HP or DEF, his SPD is incredible, to the point where he can evade just about anyone lower than his level who isn't using a gun. Now imagine that with his innate ability, which increases his SPD even further. He might as well be on an invincibility panel, 'cause no one will be able to touch him.
What's better, their HP will still be reduced to 25% after you remove the weight, so you can equip a more valuable item in its place. Just put the weight back on if you plan to heal them.
Abusing the Game[edit]
Disgaea was always made to have its systems abused on many different levels. A quarter of the game seems to be spent trying to find new ways to do it, but some players are opposed to these methods.
Move-Canceling[edit]
It's common knowledge that you can move a character, then cancel that move with 
. This seems simple enough, until you remember Team Attacks and certain Innate abilities.
You can move three Beastmasters next to a Dragon, then have the Dragon attack using the team-attack support and immense 75% stat boost of the Beastmasters. But now you can cancel all three of the 'Bmasters, then move them out to support another monster. Rinse and repeat. It's easy to see how amazing this simple gimmick can become.
Temporary Equips[edit]
In the middle of a battle, you can trade a character's current equipment with anything in the item bag, without using up the character's turn. A horde of obvious options instantly come to mind: changing to nothing but HIT-equips against a dodgy enemy, or nothing but armors when you're waiting for Poison to finish off your opponent.
But there's one that always comes in handy, even if it is a little time-consuming. Before moving, equip three shoe-type items to a character, move them with their hugely boosted move range, then return to their default equipment. Since the shoes are taken off afterwards, you can do this with every single character.
Unfortunately, there is a drawback to this. Lovers can only appear on an item when a character leaves that item equipped for a long time. Constantly removing and re-equipping items forces the counter to start over, and if you use this strategy on all your characters, you may never earn lovers.
Diagonal Throws[edit]
Normally you can only toss a character in one of the four cardinal directions, or at least it seems that way. Notice that whenever you switch between two directions, the cursor slides diagonally between the two points, instead of just reappearing at the new point. With the right timing, you can throw a character diagonally wherever the cursor lands. It's easier to do with greater throw range, since the cursor takes longer to move.
Although this seems nearly useless, as you can't pinpoint where you want the throw to land, it can become invaluable on a screwed-up Item World stage.
Throwing Through 'No Entry' Tiles[edit]
It is possible to toss a character through a No Entry tile. Place your thrower adjacent to the tile you want to cross, target the tile immediately on the other side of the No Entry tile, and then shorten/lengthen your throw distance repeatedly while attempting to throw. There's a sweet spot between your thrower and the target tile where the throw will actually occur. You'll hear a few failure sounds and, with luck, should succeed at the throw after a few seconds. This trick only works if the 'No Entry' field is one tile thick. You can't throw across multiple tiles.
This trick is not a bug. One of the townsfolk in Holt Village will subtly allude to this trick during one of the later chapters in the game.
More Power to Repetition[edit]
If you defeat an Item World boss, the item's stats will usually gain a slight boost. However, if the player kills the boss, then immediately warps out using a Mr. Gency Exit, then re-enters and kils the boss again, then leaves through the Warp Gate, the item will gain another stat boost instead of the usual one, allowing for higher Item power. This trick can only be used once per boss floor and will not work on the same boss more than once.
Lv9999 Nekomata Trick[edit]
In The Red River in Chapter 4, Axel's scheme has Geo panels that level the enemies by 10% after every turn. After several turns (nearing the hundreds) all enemies on the map will be level 9999. Do enough damage to a Nekomata, have strong characters inside the base panel and make sure that the character throwing the Nekomata into the panel is able to kill it (because the success rate of capturing monsters depends on those variables). If done properly, you will have a level 9999 Nekomata. Note that for this trick to work, your characters must be able to subdue the Nekomata depending on the level you are aiming the Nekomata for. Level 9999 Nekomatas must be able to be subdued by most, if not all, characters in your Base Panel. Otherwise, throwing a high-level Monster into your Base Panel is another way of writing a death wish.
Get early high-Rarity items[edit]
If you've been using the Item World and have managed to get a few character's offensive stats in the four digits, you can get much more money and powerful items than you should have by simply raiding a Treasure Map, which you can get just by killing pirates and will have level 255+ enemies on the first floor. Find a treasure chest, then unleash your best chain attack while making sure you can get to the exit panel with the remaining characters. If you luck out, you may even stumble upon a treasure room Mystery Gate, or a Dragon's Mystery Gate (use Gency's Exit after destroying the chests). Once you find a floor you can't traverse and are satisfied with what you've looted, use a Mr.Gency's Exit, otherwise reset and try again. Raid low-level items for more Mr.Gency's exits.