Level 1 (BSM2 Mobile)

Level 1 is the first level in Bloons Supermonkey 2 Mobile, the first in Monkey Lane. There are 1,302 bloons in total, and 300 pops are required to get a Bronze Medal.

Level layout
Once the level begins, the player encounters the first 19 red bloons descending from the top of the screen, slightly to the left from the center, in a single file line towards the player's position when the level just began. They then will turn away before reaching the position and slither from side to side, turning around 5 times before going offscreen to the left. Another denser line of 30 reds, coming slightly from the right of the center, follows the first line shortly after and mirrors its same movement.

After the two groups have passed, 60 reds come from the left center, moving downward but turning back up twice to make wide waving motions before leaving to the right center. Soon after, a second group of 60 red bloons come into play from where the last reds from the previous group are leaving. making the same waves but starting upward first and leaving to the left center.

As the last red bloon disappears, 7 small clusters of 9 blue bloons that resemble teardrops enter the fray from the top.

and more ...

Golden & Mystery Bloons locations
Golden Bloon: When the teardrop-shaped groups of blue bloons appear. Precisely, it is located under the third teardrop as the latter makes midway through the screen.

Mystery Bloons: The first one is found on one of the teardrop formations.(?)

First time tips
Using Super Monkey's default twin Dart Shooters, aim in the direction where bloons go in a vertical formation to reduce the chances of shots missing. You can prioritize hitting the bloons that are about to escape to secure them as points, or target a clustered area of bloons so you can pop more per shot.

Diamond and 100% red blops strategies (No powerups needed)
Due to the low density, predictable formations, and fairly long screen time for all bloons, using Radar Glaives (due to their wide angular shooting directions and seeking nature) on both arms upgrades can easily net a Diamond on this stage. Repeat getting Diamond as many times as necessary to get all the red blops.

X weapon type only strategies
All weapon types can easily beat this level with a Bronze or higher. The Ice and Storm badges are accessible once you beat Level 25 and Level 50, respectively.

Trivia

 * Unlike most Bloons games since BMC, BSM2 Mobile does not offer a tutorial system that leads the player to completing the level. Therefore, the player can choose to quit or restart the level without having to complete it.
 * This can be helpful when the player is on a new playthrough trying to get the hidden achievement "Precision", which requires popping the exact amount of bloons to earn a medal lower than Diamond.