Simple Fast Upgrades guide!

This is an easy guide to beating the Fast Upgrades special mission, this is just what I've come up with, and shouldn't be too hard for anyone else to recreate.

What you need

You're not going to need much, just access to tier 3 upgrades on a few towers.
1. Tier 3 on the right side of the Dart Monkey, and the Monkey Submarine.
2. Tier 3 on the left side of the Tack Shooter.
3. Tier 2 on the left side of the Ice Tower.
You won't need any premiums or lab upgrades to my knowledge, the only one I used was tier 1 attack speed, which shouldn't matter that much

What you do

This shouldn't be too hard.
Round 1; put a dart monkey at the end of the track, and get it to 0/1, and put an ice tower on the bridge at the bottom of the track, halfway between the castle and the agents bar.

Round 2; Your dart monkey should be 0/2 and your ice tower should be 1/0 now. Upgrade the dart monkey to 0/3 and the ice tower to 2/0.

Round 3; You should have a Super Monkey Fan Club (which doesn't really matter) and an Arctic Wind now. Place a tack shooter just above the Arctic Wind, and sell the dart monkey to get the tack shooter to 3/0 (Tack Sprayer). Next, get a monkey submarine somewhere, I don't think it really matters where, and upgrade it to 0/1 when you can, preferably before the round ends.

Round 4; You should have a 4/0 Ice Tower, a 0/2 Monkey Sub, and a Ring of Fire now. Get your monkey submarine to 0/3 and use road spikes or whatever you want to stop the leaking bloons. Just spamming road spikes should work fine though, since the Arctic Wind & Ring of Fire should get most of the bloons.

Round 5; You should have a 0/4 monkey submarine now. Use the monkey submarine's ability, and you win!

[owenctaylor1]

Thank you

[Bigboom243]

I have a much simpler method that only requires 2 towers. Note that this method assumes you have tier 4 unlocked for the Monkey Buccaneer. Lab Upgrades may or may not matter.

Round 1 - Place a glue gunner at the beginning, upgrade it to 1-0 and place 3 road spikes at the very end of the track.

End of Round 1:
2-0 Glue Gunner

Round 2 - You can just wait this round out. Glue Gunner will take care of everything.

End of Round 2:
3-0 Glue Gunner

Round 3 - Get 3 Monkey Buccaneers to 0-2. Place them away from the beginning of the map. Don't fret if you fail to get them to 0-2. There's always next round. If you do not have tier 4 for the Glue Gunner then 3-1 will suffice.

End of Round 3:
4-0 or 3-1 Glue Gunner
0-2 or 0-1 Monkey Buccaneer x3

Round 4 - Just focus on your Monkey Buccaneers. Make sure they are 0-3.

End of Round 4:
0-4 Monkey Buccaneer x3

Round 5 - Use abilities.

[Bigboom243]

I believe I beat this by using the Monkey Buccaneers special ability instead of the submarine to kill the BFBs.

[Sebadoh_Fan_2006]

This is super helpful! Thanks!

[boy baller]

thanks! help so much I was stuck on this for a while

[YellowPie84]

If you have double cash mode, you'll have enough money to not need to sell the dart monkey and can use it to catch the bloons that leak in round 4.

[Spycrab404]

thanks, it worked really well

[Scottobozo]

If the sub ability doesn't kill all the BFBs you probably activated the ability too early. It's a short mission so please don't get too salty if you mess it up.

[Kosh]

as soon as round 5 started i lost to a BFB the monkey sub didnt do jack shit at x-4 only killed one of them

[RoyalMaple]

easier way is to use the glue first and get it to left, when round 3 hits get a sub asnd upgrade it to the right