Partially based on Einfach's Gemcraft chapter 0 walkthrough.
Also thanks to Kongregate players: LordBucket (main quest strategy), pongi01 (orange\lime+orange tables, frostlion(grade scaling)
Updated 12 July 2014 - fixing broken formatting.
Basic tips can be found in strategic guide and in game on tutorial pages, even about target priority!.
1.First steps
2.Tricks.
3.Some targets
4.FAQ.
Part I. First steps
Storyline.
Our target of this part - blazing through storyline to get decent level and obtaining trait (for premium).
When you reach first pylon, make a stop.
Use these videos as a guide.
http://www.youtube.com/watch?v=LfmksNzFA7E
http://www.youtube.com/watch?v=I5FuGnOgibc
Main idea behind this trick - formula for summoning multiplier, which is equal to (summoned/(killed-summoned)+1)^0.53. Pylon levels let you do (killed-summoned)=1, thus provide insane multipliers. Since version 1.12 it is capped on 50, nonetheless it is still best gain of exp for time invested.
Cap will be reached with 1606 monsters summoned (you need 1607 killed), bear in mind that there are amulets which require 2k kills and 120 shrine kills.
Summoning. You summon by gem bombing the sidebar. It causes an increase in the number of monsters, monster health(7+3*grade), and the monster armor(125%). Beware! Summoning can easily kill you. Even though the monster health increases slowly, the armor level increases rapidly when summoning with grade 1s. The armor level shields creatures from damage equal to their armor level of hit points every hit (so if a tower fires a shot with a damage of 10 that hits a creature with an armor level of 2, the creature will only take 8 damage). A high armor level can make creatures almost invulnerable to damage. Summoning with grade 1s causes 4 (5 with violent explosion skills) more monsters to be summoned in the next wave.
Pulling this trick would level up you to level 90+.
Example:
Settings
Skills used (took screenshot after win)
Gems obtained during play. Green for poison traps and cyan/blue duals for pylon charging.
Leveled from 18 till 34 level. Failed at summoning exact amount.
After getting decent result on D10 max wild gem, support skills, lime/yellow/orange masteries.
Part 2: Tricks.
Gem building strategy.
1.Grade1 lime+grade 1 yellow[orange for manatrap]
2.Duplicate it
3.(dual +pure yellow [orange])+(dual+pure lime)
4.repeat from step 2
When your gems would be around grade 10, make gem ((purple G1 + lime G1) + lime G2)...+lime G9.
Use this gem in step 3 instead of pure lime.
Resulting gem would have triple gem bonus without diluting Yellow and Lime by weaker colour*.
*Don't spend skillpoints in Purple
If you would follow this path, you will get notably stronger gems.(for example, x2 crit multiplication at 7 grade)
If You don't have premium:
Better to start with highest base exp fields - they have decent number of waves, so you can get more amulets. Then it will be easier to get more exp with lowest exp fields(with higher level you can manage more summons).
Using random wave composition + restarts would give you early giant waves. Summon the hell out of them, then use high grade yellow gem in shrines. Result is individual, with high resonance grade 7 gem in shrine could kill 120k hp monsters.
If you have premium:
Endurance is easier to start with highest settings on lowest exp fields (less hp for starting monsters=more angers=easier to build defence). Example of endurance
Part 4. FAQ:
1. Unlocking hidden levels.
A1 : L9 Challenge Amulet (Kill 7000 monsters)
A13: Kill 12 Apparitions Amulet
M1 : Kill 200,000 monsters Amulet
M13: K9 Challenge Amulet (Beat 100 waves) Yes, impossible without premium.
2. Changing target priority. Shift-click on gem
3. Breaking tomb. Set target priority to "structures"
4. I replayed field and didn't get exp!?!
You get as exp difference between you current attempt and you previous best attempt, obviously if you scored better.
5. How to kill *spoiler* at *spoiler*?
Grade 7 yellow gem in shrine.
6. Crystal ball near A13. Horizontal bars over the stages.
It shows your performance on fields.
For every 5x multiplier you get on field it shows 1 bar, with maximum being 4.
7. Multipliers.
Summoning (summoned/(killed-summoned)+1)^0.53
Endurance based on waves beaten and isn't related with amount of summoned monsters
Sidenote: For non premium the 'final' (yes final, since anything after that is just more levels, and you can never get close to the levels premiums can have) goals seems to be:
Max multiplier on all pylon maps (1110.7) Multiplier of 20+ on the rest (Why 20? Well 20 have a visual effect of 4 white lines) All possible medallions (Can get most of them, except those involving giant monsters, 10x hp, all maps, and 100+ waves)
You can of course always play for more levels after this, but it seems a moot point really.
I have gotten all of the above myself, except the challenge amulet on C11, so it is doable, C11 is just a pain, very few rounds to get those 7k kills.
When Creating Duel L-Y gems, I found a way to make better ones than just taking the grade 4 from your process and leveling it up. Just repeat your process as if the grade 4s were the mixed grade 2s produced at the beginning. So, you mix one with pure L, the other with pure Y (both grade 4) and combine those to get a grade 6. Then repeat with the grade 6s ect. Unless thats what you are already doing.
Getting the 7k Kill on C11 on Non Premium seems to be somewhat based on luck, need enough giant monster waves early on to have enough mana to summon the needed amount.