- Estimated achievement difficulty: 2/10
- Offline: 12 
- Online: 0 
- Estimated time for 200: 10 hours
- Minimum playthroughs: 2
- Missable achievements: None!
- Glitched achievements: None!
- Cheats disable achievements: No Cheats.
Feeding Frenzy is as casual as they come. You eat, you grow, and then you eat bigger fish. Wash rinse and repeat, there's Feeding Frenzy. It is a great game for when you have nothing to do or for when you want to relax. The game does however involve a lot of grinding, so things can get tedious at a certain point. All around it's a decent game and for 400 points it's a great buy.
Step 1: First Playthrough
This is your "New Game" playthrough, from level 1 to 40. Along the way, it is best to try and unlock "Point Champion". You are required to obtain 300,000 points to unlock "Point Champion", which is going to take a full playthrough from level 1 to 40 without dying.
As a general rule, try to eat schools of fish, as the school bonuses you get are what are going to make or break the 300,000 point barrier. Starfish bubbles are always a plus. Tail Bites, in my opinion, are too risky to go for as lives are precious for pushing over 300,000 points on level 38. Pearls are fine, but as a general rule only go for them if you saw the shell open and you know you have time to grab the pearl without getting killed. If you have played well up to level 38, you should have plenty of lives stored up. From here, try to eat little fish until you are almost done with the level, then commit suicide in one way or another. Repeat until you pass the point barrier.
As you are still going to be new to the game at the time, you probably won't reach 300,000 points on your first try. Although there isn't any point in not trying. If you happen to fully die mid-game, you can simply start over on the level you died at with an empty upgrade meter. The only downside to this is that your points will be reset to 0. Because of this, you can unlock every champion achievement at a leisurely pace, dying as much as you want. If you die or don't reach the 300,000 point barrier by the end of your playthrough, stay persistent and keep trying until you do.
Step 2: Second Playthrough
It's time for your Time Attack playthrough (pun not intended.) In this mode, you have unlimited lives, with the added bonus of a clock that ends your game if it reaches 0. You have to start and level 1 and play to level 40. If you ever lose, you are forced to start over from the first level. The first few levels are the hardest, and are the ones you will most likely lose on. Once you reach round 20 or so, you should see your clock getting more and more time added on at the end of each level. You may even find yourself having minutes of spare time near the end of the game.
Time bubbles are your best friend. It is to your advantage to drop everything and go for them the moment they are seen. One bubble may not seems like much time, but if you collect an average of only 2 bubbles per level, that's 80 bubbles, which equals loads of extra time. Try to play it safe. Being reckless and boosting into the mouths of predators without seeing them will make you lose more often than moving slowly to grant yourself time to prepare for threats.
Step 3: Grinding:
This is by far the longest portion of the game. You are going to need to achieve 1,000 eaten sharks, coupled with 40,000 eaten fish of any type. It is best to start with the sharks, so that all of the fish you get along the way will contribute to the 40,000 total fish. Play level 38, and camp the 2 shells at the bottom of the map. Swim between them, eating any pearl that is safe. Avoid predators, and eat little fish when they swim by. Once you reach your 3rd size, try to avoid everything except for sharks. When you see a shark, eat it. If you are about to finish the level and have more than 2 lives left, suicide as fast as you can. You can die as many times as you want with your sharks still counting, as long as you finish the level. If you lose all of your lives and lose the level, none of your sharks will count.
Deep Water Dreams is the best level to boost your 40,000 fish once you finally finish off your sharks. This is the longest portion of the game, and will take hours of grinding. Try to do it in small portions so that you don't become completely bored of the game.
If you somehow don't have 1000 starfish bubbles eaten by this point, play the game a bit and try to eat a few more, as you should be close if you have done everything else already. You are border lining the 10 hour mark at this point if you haven't unlocked 10 Hours yet. A few more rounds is probably all it's going to take to unlock it.
[XBA would like to thank Blue Radium for this Roamap]