Due to it being a jutsu that has to be maintained by the user, if you're on land and in thevery barrier, you could use an earth jutsu such as spikes under the user to disrupt them. As it says enhanced strength allows movement. So any form of it when trapped would allow handseals to be used which can then allow for more jutsu to be used and break the barrier. Without strength to make handseals, I'd break the barrier with an Australian rank jutsu that requires 0 hand seals.
Since this jutsu directly takes chakra and gives it to the user. Could I begin gathering natural energy and turn them into stone?
Technically yes you could xd
Alright lets speed this up:
Re: Fuuinjutsu and Kinjutsu Techniques
A rank
(Kyōkai Kekkai no Jutsu) - Boundary Barrier Technique
Rank: A-Rank
Type: Supplementary
Range: Short - Long
Chakra cost: 30 (-10 per turn remaining active)
Damage points: N/A
Description: This is a detection type barrier which is simply a more advanced version of the (Kekkai: Tengai Hojin) - Barrier: Dome Method Formation technique and that can be used to surround an area and allows the user to monitor a certain area covering from the sky to underneath the ground creating a sphere. The user will create a tag with the 許可 (Kyoka) Kanji and place it on the ground, doing the confrontation hand seal afterwards to activate it. After the barrier is erected, the user, if inside it, will be able to detect any enemy inside it, even if he hiding his presence. After that, anyone who enters or leaves the barrier is instantly detected as well as anything that moves inside it. Techniques that mask the users presence are ineffective at avoiding detection as the barrier focuses on movement and displacement of matter, not solely on chakra detection. The barrier can also be moved according to the requirements of the user by moving the tag.
Note: Can only be used twice.
(Hogo Fuda Kekkai no Jutsu) - Protective Tag Barrier Technique
Rank: A-Rank
Type: Supplementary
Range: Short
Chakra cost: 30
Damage points: N/A
Description: This technique uses special talismans that when a specific part of the users body is targeted, this technique then activates and covers the specific area. The talismans move to cover the specific body part and form a barrier protecting it.
Note: Only Ao biographies can apply the tags.
(Tajū Mugen Hōyō ) - Multiple Infinite Embraces
Rank: A-Rank
Type: Offensive
Range: Short-Mid
Chakra cost: 30 (-100 to the target per turn, +100 to user per turn)
Damage points: N/A
Description: This technique is a stronger version of Infinite Embraces and is used basically in the same manner. The user will do the Tiger → Dog → Horse → Dragon → Boar hand seals and slam his hands on the ground, creating a bigger barrier than the original technique but similar in its essence which drains the target's chakra but also pushes down on them making it much harder to break free. The massive pressure the technique puts on the target prevents the target from moving unless it has some sort of enhanced strength ability, making it very difficult to break free from it. Unable to move, the targets are also unable to mold chakra above A-Rank while having his chakra drained. The barrier can only be broken by A-Rank techniques or above or by attacking the user.
( Hijutsu: Fūinjutsu Kai ) – Secret Technique: Sealing Release
Rank: A-Rank
Type: Supplementary
Range: Short
Chakra cost: 30
Damage points: N/A
Description: The user can use this technique to dispel sealing methods through channelling their chakra in direct contact with a seal.
Note: Can only dispel Sealing methods B rank and below.
Note: Requires extensive Fuuinjutsu training.
( Fūinjutsu: Seikatsu Kekkai ) – Sealing Technique: Living Barrier
Rank: A-Rank
Type: Supplementary
Range: Short
Chakra cost: 30 (-15 per turn active)
Damage points: N/A
Description: The user takes out two bladed objects and crosses them. This creates a seal that seals away 50% of the chakra of any opponents within short-range of the user, allowing them to use only upto A-rank techniques.
Note: Sealing Method lasts 2 turns maximum.
Note: If the opponent moves out of short range, he regains his original abilities
( Keiyaku Fūin ) – Contract Seal
Rank: A-Rank
Type: Supplementary
Range: Short
Chakra cost: 30
Damage points: N/A
Description: The user, after having obtained some of the opponent's blood, touches a summoning that the opponent is controlling, causing a kanji formula to generate which forces the summoner to lose control of that summon. The summon does not fight for the user, but instead disappears back to its summon realm.
Note: Can only be used twice.
Go for 3 in one go, break them down, how they work, what's good whats bad and any questions you have.