Fast hands!
The most important and powerful bug is the fast hands trick. You can use it to build otherwise unavailable structures in the Sanctuary, Train Elf level 4 or Warlock level 3, produce otherwise unavailable items in Armories, make dinosaurs, builders and sorcerers equip items and even train forbidden units like the T-Rex or the hidden Brachiosaurus! Great for testing, fooling around with a bunch of T-Rexes, or breaking the game, so be warned 
Here’s a demonstration.
You need to assign a button donor (a Caveman with a shield for example) and a button abuser (a Dino with a shield) to ctrl-number party shortcuts.
Click on the caveman’s shield to equip it, but right after your click and before he actually equips it, select the dino via a shortcut number key. Bravo, your dino now uses a shield! Safer, and also kind of terrifying!
Shields are safe to use, but equipping weapons is dangerous, as it may crash the game. The dinos don’t really have a bow animation
Bear in mind you still cannot equip a bow and a shield on a single unit.
To craft items and train builders and other units use the same method but with buildings. Select a building that has a button unlocked (for example the food-storage has the first four buttons working) and quickly change to a building you want to trick. You can safely train not-yet-available levels of units for example. If you try the other tiles, it could possibly lead to a bugged builder with a spellsprite skill, a unit skill or any other that isn’t a building. Clicking on it will inadvertently crash the game!
The T-Rexes are hidden in the Barracks’ penultimate tile. Use Dilophosaurus building button in Tyrano Sanctuary, or Wild Ginseng in an Armory to click the tile, then change quickly to Barracks.
The Celestial Sword is under the last Armory tile. You can „fast hands” it by clicking the Capturer training in the Sanctuary and quickly changing to the Armory.
Using the Capturer button and clicking the last tile in Barracks, a hidden, invisible Brachiosaurus unit will be trained.
These controlled neutral dinos are kind of wild, they wander around randomly and do not have a move command at all. You must attack-move to move them and order them to sleep to make them stay in one place. They will sleep indefinitely.
Food vanishing
If you want to get rid of food quickly, either to postpone winning in the first map or withhold it from the enemy, just order a unit to give food to itself. 25% of it will disappear!
I wonder what happens to it…
The following fast hands steps-by-steps are translated from the Korean wiki:
If you use unit production bugs or weapon wielding bugs, the game may crash. In that case, killing a unit made with a bug and unequiping the incompatible weapon can fix the issue.
T-Rex production bug is similar to the weapon equipping bug. The order is as follows:
1) In the case of the Tyrano tribe, click on the Sanctuary, and in the case of the Kumba tribe, click the Armory and set the unit designation 1. For other tribes, use cheats to make all buildings craftable (the units cheat)
2) The primitive man training center (Barracks) is designated as unit 2.
3) Sanctuary – click the Dilophosaurus Training Center. Armory – click the Wild Ginseng.
4) Quickly change the selected building with a ctrl-group number to the Barracks.
5) Something is being produced.
6) Tyrannosaurus appears.
Tyrano Tribe Named Dinosaur Production (probably just weird stats): Application of Tyrannosaurus Bugs. Unit designation 1 chooses the Sanctuary, and 2 chooses the desired dinosaur training center. The Veloci Training Center consumes 1500 food, and the Tric Training Center consumes 1800 food. The locations are Tric Training Center, Dilophos Training Center, and Capturer, respectively, and special units do not appear in Veloci Training Center and Huts (appears with the same abilities as normal units). Below is an example of creating a named velociraptor.
1) If you activate the bug by clicking on the location of the Tric Training Center in the Sanctuary, a raptor with a higher HP (blue) than the primary raptor and other stats will appear.
2) If you activate the bug by clicking the location of the Dilophos Training Center in the Sanctuary, a raptor with higher HP and lower VP and MP than the secondary raptor appears.
3) If you activate the bug by clicking on the position of the Capturer in the Sanctuary, a raptor with a significant amount of MP will appear on the HP of the primary raptor, with the OP of the secondary raptor, slightly higher and lower DP and VP.
Crafting the Legendary Celestial Sword: Requires an Armory.
1) The Sanctuary and the Armory are designated as units 1 and 2, respectively.
2) Similar to the above T-Rex production bug, click the production location of the Capturer then change quickly to the Armory.
3) Something is being made in the Armory.
4) The Celestial Sword appears.
Attaching a shield to a Dinosaur, Wizard or a Builder:
1) Prepare a friendly primitive man with a shield (Commoners, Muscle-Men, and Warriors).
2) Prepare the target unit that has a shield in it’s inventory, but cannot wield it by default.
3) Designate them as groups 1 and 2, respectively.
4) Quickly alternate units and click the shield to equip them. In this case, both units’ shields must be in the same slot.
5) Dinosaurs are equipped with shields.
It’s possible to attach weapons to dinosaurs this way… but there’s a problem. In the case of melee dinosaurs, they only use weapons in melee combat. If a bow or boomerang is equipped, an arrow or boomerang can only be seen flying briefly in melee combat. In other words, even if you attach a ranged weapon, you cannot attack from a distance. The faster attack speed of melee dinosaurs make the usage of weapons deadly anyway. Poison Arrows still paralyze, Boomerangs still deal extra damage to spellcasters, etc.
In the case of Dilophosauruses only shields provide bonuses when active.
In general, you cannot equip more than one shield or a single shield mutliple times.
Warlock Multiple Self-Destruct Bug: A simple exploit. If you hit the self-destruct button repeatedly without doing anything else, the explosions will occur in a row. To elevate this to another level it’s possible to have the caster survive this if you employ the Elf’s shield magic and move the Warlock quickly to another tile.
Boosting Building Stamina: If you apply regeneration spell (two red lights circling around) or healing magic to a building during construction, you will exceed the limit of the building’s maximum health. Don’t overdo it however, as the building can finish building as a burning wreck.
Food bug: Have a unit with 50 or less food walk to a food storage and deposit an item there. Any item other than food is fine, but beware as it will disappear. The item is gone, and the remaining food is deposited to the bank. The unit though is left with a 0 food item. Put the 0 food on the ground and wait for it to decay. The counter will wrap around and you now have 65535 food!
Create an invincible Rhamphorhynchus:
1) After producing a Rhamphorhynchus, it flies over the enemy base and passes it.
2) If you place Rhamphorhynchus in the middle of a water feature such as a large lake, enemies will flock to the waterfront.
3) If there is no movement while the enemy primitives are gathering, move the Lamporincus to the water near the enemy.
4) Rhamphorhynchus immediately recognizes and attacks the enemy after moving.
5) Click on the enemy being attacked to check that their health is decreasing, and when they die, click on Ramporincus to attack immediately.
6) Rhamphorhynchus’ stats start to rise automatically, and at this time, the attacked enemies or enemies gathered nearby do not move.
7) When the stats of Rhamphorhynchus go up to the maximum (white), growth stops.
8) If you move Rhamphorhynchus for a while and then attack it directly, the bug will be resolved.
9) You can try making a unit with several Rhamphorhynchus.
Schrödingers Ranger / Quantum item copying:
1) Learn Space-Shift magic as a Ranger from the Romek tribe.
2) Put the item to be copied into his inventory.
3) Attack the Ranger and teleport him away just before his death.
4) If you teleport with right timing, the Ranger is judged dead and the attacker gains experience (sometimes) and loot. But the Ranger is alive! You can copy all kinds of legendary weapons, but timing is key.
—
If you teleport to the max level of a ranger and then hit the last battle as a team, friendly units can reach max level in an instant.
(^no idea what it means and where did I get it from)
One of the most fun tricks is the powerful
4th Barracks Unit Trick.
Using Fast Hands Trick by clicking the largest, 10k food pile in Food-Storage, and then quickly group-swapping to a Barracks, you can train a mysterious builder unit for 800 food. What will he build? That’s the catch! Anything!
Depending on the horizontal axis tile number, his spawn point decides his ability.
First tile from the left, hugging the map border is the spawn point of a Sanctuary builder (of the same tribe as the Barracks he walked out of). The next ones will be the other buildings, in order of appearance in the Sanctuary menu, ending with a Capturer on tile 15. So an Elf Training builder will spawn on tile 6 counting from the left map border, and a Ranger Training builder will pop out on the 9th tile.
(This is considerably harder to pull off on maps without a Sanctuary to begin with, but doable with enough patience to populate the map with units from the Barracks until they spawn closer to the left border. You can even build a Sanctuary on a map without one with this trick. Try it in the 3rd Tyrano map.)
Beware! Any more steps to the right and the builders will become bugged! Clicking a suspicious ability made of glitchy spell sprites will almost certainly crash your game!
This tricks are taken and translated from a Russian forum:
Artifact multiplication:
(works with teleporting units)
1. Upgrade the unit’s magic before teleportation (you can forcefully kill your unit)
2. Give the unit an artifact.
3. Go to a large dinosaur and at the moment when the dinosaur makes the last fatal bite, teleport to a safe place. (it’s better to save before feeding the dinosaur)
4. A corpse with an artifact is formed in front of the dinosaur, and the unit itself teleports with the same artifact and 0 HP.
5. Arm an army of freeloaders.
By the way, on jammed „harvesters” you can pump up to the limit all those who can shoot. (except for grandfathers with freezing, devils with a gas attack and poisonous dinosaurs)
To do this, you need to pump up (you can do this on your units) VP by about 2/3, in general, so that the unit itself begins to attack at a distance of 4 cells.
We approach the „harvester” at auto-attack distance and quite often get a freebie, the „harvester” does not die, and with each auto-shot the unit receives exp as for a killed one.
According to my observations, it is better to approach from the right or from below, and start killing the „harvester” with only OP turned on for pumping, then the chance that the „harvester” will not die is much higher.
P.S. Also, if you capture all the enemy’s storages, the enemy does not build new ones. Then you can jam any of his units with meat, fill the pockets of some of your newbies with meat to the brim and feed him to the enemy. The enemy unit goes to take the meat and gets stuck on this meat because there is nowhere to give it and there is no more room in the pockets.
It’s so good to get rid of pumped up freezers and cool healers.